The Ocean As Habitat – An Introduction
The various divisions of the ocean.
There are two main divisions of the ocean – the Pelagic Zone and the Benthic Zone. Let us take each in turn. The pelagic zone is divided horizontally into two provinces. The Neritic Province ( water over continental shelves) and the Oceanic Province ( water over the deep ocean floor). The pelagic zone is also divided vertically into the photic zone where sunlight penetrates the water and allows photosynthesis and the aphotic zone where there is not enough light for photosynthesis.The Benthic Zone is the name given to the sea floor. Beyond the shelf break of the continental shelf the slope descends to the depth of 3-4km where the ocean floor begins. Beyond this is the Abyssal Zone (3-6kms deep) and finally the Hadal Zone composed of trenches more than 6km deep e.g. Mariana Trench.
In addition one could say that in a different sense the divisions of the oceans relates to the rough division of the ocean into the Atlantic, Pacific, Indian and Southern Oceans and Arctic Ocean.
How are both waves and tides generated ?
Waves are generated principally by the heat gradient caused by the curvature of the Earth’s surface and the position of the Earth relative to the sun. The heat gradient from the tropics to the arctic drives atmospheric and ocean circulation by the creation of winds which create waves.Waves are created by the wind and size varies according to velocity, direction, duration of the wind and fetch (distance winds blows continuously over the sea). Capillary waves (less than 1.74cm) are created by gentle winds blowing over the surface of the sea. As wavelength increases gravity takes over from surface tension as the dominant factor in wave shape. There are also storm waves which in exceptional circumstances can reach 35 meters in height.
Finally in addition tsunami waves can be caused by earthquake action.
Tides are generated by the gravitational pull of the Moon and the Earth as they rotate about their common centre of gravity. This process is further complicated by three main factors:
a) The gravitational force of the sun (causing Spring and Neap tides).b) The rotation of the Earth about its axis creating the Coriolis force which deflects water to the right in the northern hemisphere and to the left in the southern hemisphere.c) Topographical features of the surface of the Earth. The shape of the continents for example causes different tidal patterns ( semidiurnal, diurnal and mixed semidiurnal ).
The chemical and physical characteristics of seawater.
Seawater is approximately 96.5% pure water. The remaining 0.5% is composed of various dissolved substances such as sodium, chloride, sulphate, magnesium, calcium, potassium , bicarbonate, bromide, borate,strontium, fluoride and silica, nitrates, phosphates and organic substances.Pure water has a simple structure of one atom of oxygen to two atoms of hydrogen to form one molecule of water. The relatively weak H bonding of water is also important when we discuss the physical properties of water such as its relatively high freezing point, high boiling point, high heat capacity, relative high latent heat of evaporation and freezing and the fact that water keeps a high variety of substances in solution needed for chemical reactions. These properties of water obviously effect the characteristics of seawater. In addition the viscosity, temperature, pressure and salinity of seawater is important for marine life. Sea water salinity can vary depending on evaporation, precipitation, river run-off, and the freezing and thawing of sea ice. In turn the density of seawater depends on the temperature and salinity factors. In addition the dissolved gases in seawater such as oxygen, nitrogen and carbon dioxide are important in the buffering action of seawater (against the effects of global warming).
Light and sound in the ocean
Light.
As light hits the sea surface up to 50% may be reflected away. Seawater absorbs the red-orange and violet ends of the visible spectrum first and the blue-green at greater depth. In tropical waters 10% of blue light may reach a 100m in depth. Nearer to shores because of turbidity and increase in particulate matter this balance changes giving the distinctive green colour to these areas. The incidence of light in the sea is essential to the distribution of certain types of marine life. The light is used for photosynthesis in the photic zone to approximately 100m deep. At about a 1000m there is very little penetration of light at all. In fact the only light is now bioluminescence of the marine animals themselves.
Sound
The sea is known as an acoustically dominated environment in that sound travels more slowly but very much further than light through water. Sound vibrates the material it moves through so propagates well through seawater. Sound intensity in the ocean decreases as it moves away from the source in three main ways:
a) Spreading. Here sound is moving out in all directions losing intensity as it does so.b) Absorption. Here sound is absorbed by the water and dissolved constituents.c) Scattering. Here sound is deflected by particles suspended in water.
The speed of sound in water increases in warmer, more saline and higher water pressures. Speed is slowest on the surface. Because of these differences a sound channel develops at approximately 0.5km to 1.5km in depth between latitudes 60 degrees North and 60 degrees South. This is vital for whale communication for example.
Dr Simon Harding
www.coberongreen.com
www.chronosconsulting.com
About the Author
Men’s Citizen Chrono-Time AT Chronograph Eco-Drive Watch BY0000-56E Watch Review – Watch Shop UK
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Citizen Chrono Eco Drive Stainless Steel AT1184-55E $318.75 “This Citizen Chrono Eco Drive Stainless Steel AT1184-55E watch is a timepiece from the Citizen Eco-Drive collection and has a Stainless Steel case with a Stainless Steel dial and a Stainless Steel strap. This Citizen watch, made for Mens features Eco-Drive movement within its 42 mm. case and a scratch resistant Mineral face. The Citizen Chrono Eco Drive Stainless Steel AT1184-55E watch is water resistant up to 100 mt. / 330 ft. Dexclusive.com has unbelievable deals on Brand NEW Citizen Chrono Eco Drive Stainless Steel AT1184-55E watches and they include the Citizen manual and a Dexclusive Warranty.All of the products sold on Dexclusive.com are 100% authentic Including the Citizen Chrono Eco Drive Stainless Steel AT1184-55E, it is first quality and ships in the original packaging with original parts. Dexclusive has been selling high fashion watches and sunglasses online since 2004. Dexclusive sells Citizen Chrono Eco Drive Stainless Steel AT1184-55E watches and thousands of other brand name designer products at discount prices. Whether you are shopping for yourself or looking for a great gift, Dexclusive.com provides you with an excellent selection of products including the Citizen Chrono Eco Drive Stainless Steel AT1184-55E watch at unbelievable sale prices.Dexclusive has a team of friendly customer service personnel available to assist you if you have any questions about the Citizen Chrono Eco Drive Stainless Steel AT1184-55E watch or any other model you see at Dexclusive.com. Please call our Toll Free Number 1-866-573-3953 or you can click on the Live Online Chat button and one of our agents will be happy to assist you with any questions or concerns you might have. Don’t forget to follow us on Twitter @dexclusive or become a fan on Facebook for the latest news and deals from Dexclusive.com.Citizen Chrono Eco Drive Stainless Steel AT1184-55E-AT1184-55ECIT-AT1184-55E” |
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Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E $296.25 “This Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E watch is a timepiece from the Citizen Eco Drive collection and has a Stainless Steel case with a Black dial and a Stainless Steel strap. This Citizen watch, made for Men features Eco Drive movement within its 42 mm. case and a scratch resistant Mineral face. The Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E watch is water resistant up to 100 mt/ 330 ft Dexclusive.com has unbelievable deals on Brand NEW Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E watches and they include the Citizen manual and a Dexclusive Warranty.All of the products sold on Dexclusive.com are 100% authentic Including the Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E, it is first quality and ships in the original packaging with original parts. Dexclusive has been selling high fashion watches and sunglasses online since 2004. Dexclusive sells Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E watches and thousands of other brand name designer products at discount prices. Whether you are shopping for yourself or looking for a great gift, Dexclusive.com provides you with an excellent selection of products including the Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E watch at unbelievable sale prices.Dexclusive has a team of friendly customer service personnel available to assist you if you have any questions about the Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E watch or any other model you see at Dexclusive.com. Please call our Toll Free Number 1-866-573-3953 or you can click on the Live Online Chat button and one of our agents will be happy to assist you with any questions or concerns you might have. Don’t forget to follow us on Twitter @dexclusive or become a fan on Facebook for the latest news and deals from Dexclusive.com.Citizen Eco Drive Mens Chrono Stainless Steel AT2090-51E-AT2090-51ECIT-AT2090-51E” |
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Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D $375 “This Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D watch is a timepiece from the Citizen Miramar collection and has a Stainless Steel case with a Stainless Steel dial and a Stianless Steel strap. This Citizen watch, made for Womens features Eco-Drive movement within its 31 mm. case and a scratch resistant Mineral face. The Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D watch is water resistant up to 100 mt. / 330 ft. Dexclusive.com has unbelievable deals on Brand NEW Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D watches and they include the Citizen manual and a Dexclusive Warranty.All of the products sold on Dexclusive.com are 100% authentic Including the Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D, it is first quality and ships in the original packaging with original parts. Dexclusive has been selling high fashion watches and sunglasses online since 2004. Dexclusive sells Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D watches and thousands of other brand name designer products at discount prices. Whether you are shopping for yourself or looking for a great gift, Dexclusive.com provides you with an excellent selection of products including the Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D watch at unbelievable sale prices.Dexclusive has a team of friendly customer service personnel available to assist you if you have any questions about the Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D watch or any other model you see at Dexclusive.com. Please call our Toll Free Number 1-866-573-3953 or you can click on the Live Online Chat button and one of our agents will be happy to assist you with any questions or concerns you might have. Don’t forget to follow us on Twitter @dexclusive or become a fan on Facebook for the latest news and deals from Dexclusive.com.Citizen Miramar Chrono Eco Drive Stainless Steel FB1180-56D-FB1180-56DCIT-FB1180-56D” |
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Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H $524.25 “This Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H watch is a timepiece from the Citizen Calibre collection and has a Stainless Steel case with a Stainless Steel dial and a Stainless Steel strap. This Citizen watch, made for Mens features Eco-Drive movement within its 45 mm. case and a scratch resistant Mineral face. The Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H watch is water resistant up to 200 mt. / 660 ft. Dexclusive.com has unbelievable deals on Brand NEW Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H watches and they include the Citizen manual and a Dexclusive Warranty.All of the products sold on Dexclusive.com are 100% authentic Including the Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H, it is first quality and ships in the original packaging with original parts. Dexclusive has been selling high fashion watches and sunglasses online since 2004. Dexclusive sells Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H watches and thousands of other brand name designer products at discount prices. Whether you are shopping for yourself or looking for a great gift, Dexclusive.com provides you with an excellent selection of products including the Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H watch at unbelievable sale prices.Dexclusive has a team of friendly customer service personnel available to assist you if you have any questions about the Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H watch or any other model you see at Dexclusive.com. Please call our Toll Free Number 1-866-573-3953 or you can click on the Live Online Chat button and one of our agents will be happy to assist you with any questions or concerns you might have. Don’t forget to follow us on Twitter @dexclusive or become a fan on Facebook for the latest news and deals from Dexclusive.com.Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54H-AV0050-54HCIT-AV0050-54H” |
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Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E $356.25 “This Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E watch is a timepiece from the Citizen Perpetual collection and has a Stainless Steel case with a Stainless Steel dial and a Stainless Steel strap. This Citizen watch, made for Mens features Eco-Drive movement within its 42 mm. case and a scratch resistant Mineral face. The Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E watch is water resistant up to 100 mt. / 330 ft. Dexclusive.com has unbelievable deals on Brand NEW Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E watches and they include the Citizen manual and a Dexclusive Warranty.All of the products sold on Dexclusive.com are 100% authentic Including the Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E, it is first quality and ships in the original packaging with original parts. Dexclusive has been selling high fashion watches and sunglasses online since 2004. Dexclusive sells Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E watches and thousands of other brand name designer products at discount prices. Whether you are shopping for yourself or looking for a great gift, Dexclusive.com provides you with an excellent selection of products including the Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E watch at unbelievable sale prices.Dexclusive has a team of friendly customer service personnel available to assist you if you have any questions about the Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E watch or any other model you see at Dexclusive.com. Please call our Toll Free Number 1-866-573-3953 or you can click on the Live Online Chat button and one of our agents will be happy to assist you with any questions or concerns you might have. Don’t forget to follow us on Twitter @dexclusive or become a fan on Facebook for the latest news and deals from Dexclusive.com.Citizen Perpetual Chrono Eco Drive Stainless Steel BL8090-51E-BL8090-51ECIT-BL8090-51E” |
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Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A $524.25 “This Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A watch is a timepiece from the Citizen Calibre collection and has a Stainless Steel case with a Stainless Steel dial and a Stainless Steel strap. This Citizen watch, made for Mens features Eco-Drive movement within its 45 mm. case and a scratch resistant Mineral face. The Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A watch is water resistant up to 200 mt. / 660 ft. Dexclusive.com has unbelievable deals on Brand NEW Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A watches and they include the Citizen manual and a Dexclusive Warranty.All of the products sold on Dexclusive.com are 100% authentic Including the Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A, it is first quality and ships in the original packaging with original parts. Dexclusive has been selling high fashion watches and sunglasses online since 2004. Dexclusive sells Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A watches and thousands of other brand name designer products at discount prices. Whether you are shopping for yourself or looking for a great gift, Dexclusive.com provides you with an excellent selection of products including the Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A watch at unbelievable sale prices.Dexclusive has a team of friendly customer service personnel available to assist you if you have any questions about the Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A watch or any other model you see at Dexclusive.com. Please call our Toll Free Number 1-866-573-3953 or you can click on the Live Online Chat button and one of our agents will be happy to assist you with any questions or concerns you might have. Don’t forget to follow us on Twitter @dexclusive or become a fan on Facebook for the latest news and deals from Dexclusive.com.Citizen Calibre Chrono Eco Drive Stainless Steel AV0050-54A-AV0050-54ACIT-AV0050-54A” |
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Asics Square Chrono QA4120302 $54 Asics Square Chrono QA4120302 |
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Nixon The 51-30/51-30 Chrono (Screen) $9.99 Nixon The 51-30/51-30 Chrono (Screen) |
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Citizen Eco Drive Chrono – Brown Face – Rotating Bezel – Brown Leather – Date $206.25 Brown dials are a big trend in watches and this Citizen Chrono has a rich brown face complemented by a Stainless Steel Case Brown Face 1 Second Chronograph Measures up to 60 Minutes 12/24 Hour Time One-Way Rotating Elapsed-Time Bezel Tachymeter Date Window at the 4 o’clock position Mineral Glass Crystal is scratch resistant Brown Leather Strap Water Resistant to 100 Meters (330 Feet) 42mm Case Width |
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Nixon Watches 42-20 Chrono Watch $449.95 42-20 Chrono Watch |
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Citizen Eco-Drive Regent Diamond Chrono Women’s watch #FB1223-55X $550 Dress watch, Eco-Drive solar-powered technology, Overcharging prevention feature, Chronograph featuring 24-hour, 60-minute and continuous seconds subdials, Polished rose-gold-tone sword hands with luminous accents and sweep seconds, Polished rose-gold-tone sword hands mark subdials, Applied polished rose-gold-tone baton markers with luminescent tips, White Arabic numbers and indices mark subdials, Luminescent square hour markers and white indices form surrounding minute track, Analog date aperture at four o’clock, Brushed brown dial with polished rose-gold-tone logo applique below twelve o’clock, Polished rose-gold-tone stainless steel bracelet with adjustable links and push-button-clasp, Polished rose-gold-tone stainless steel bezel encrusted with 28 genuine diamonds, Large polished rose-gold-tone stainless steel round case, Textured rose-gold-tone steel crown, Polished rose-gold-tone steel selector buttons, Stainless steel caseback, Sapphire crystal, 100 meters/330 feet water resistant |
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Citizen Eco-Drive Regent Diamond Chrono Women’s watch #FB1223-55D $575 Dress watch, Eco-Drive solar-powered technology, Overcharging prevention feature, Chronograph featuring 24-hour, 60-minute and continuous seconds subdials, Polished rose-gold-tone sword hands with luminous accents and sweep seconds, Polished rose-gold-tone sword hands mark subdials, Applied polished rose-gold-tone baton markers with luminescent tips, Black Arabic numbers and indices mark subdials, Luminescent square hour markers and black indices form surrounding minute track, Analog date aperture at four o’clock, Silver mother-of-pearl dial with polished rose-gold-tone logo applique below twelve o’clock, Polished rose-gold-tone stainless steel bracelet with adjustable links and push-button-clasp, Polished rose-gold-tone stainless steel bezel encrusted with 28 genuine diamonds, Large polished rose-gold-tone stainless steel round case, Textured rose-gold-tone steel crown, Polished rose-gold-tone steel selector buttons, Stainless steel caseback, Sapphire crystal, 100 meters/330 feet water resistant |
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Citizen Eco-Drive Regent Diamond Chrono Women’s watch #FB1224-52D $575 Dress watch, Eco-Drive solar-powered technology, Overcharging prevention feature, Chronograph featuring 24-hour, 60-minute and continuous seconds subdials, Polished gold-tone sword hands with luminous accents and sweep seconds, Polished gold-tone sword hands mark subdials, Applied polished gold-tone baton markers with luminescent tips, Black Arabic numbers and indices mark subdials, Luminescent square hour markers and black indices form surrounding minute track, Analog date aperture at four o’clock, Silver mother-of-pearl dial with polished silver-tone logo applique below twelve o’clock, Polished silver-tone stainless steel bracelet with brushed inserts, adjustable links and push-button-clasp, Polished gold-tone stainless steel bezel encrusted with 28 genuine diamonds, Large polished silver-tone stainless steel round case with brushed accents, Textured gold-tone steel crown, Polished gold-tone steel selector buttons, Stainless steel caseback, Sapphire crystal, 100 meters/330 feet water resistant |
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Citizen Eco-Drive Regent Diamond Chrono Women’s watch #FB1220-53D $550 Dress watch, Eco-Drive solar-powered technology, Overcharging prevention feature, Chronograph featuring 24-hour, 60-minute and continuous seconds subdials, Polished silver-tone sword hands with luminous accents and sweep seconds, Polished silver-tone sword hands mark subdials, Applied polished silver-tone baton markers with luminescent tips, Black Arabic numbers and indices mark subdials, Luminescent square hour markers and black indices form surrounding minute track, Analog date aperture at four o’clock, Silver mother-of-pearl dial with polished silver-tone logo applique below twelve o’clock, Brushed silver-tone stainless steel bracelet with polished inserts, adjustable links and push-button-clasp, Polished silver-tone stainless steel bezel encrusted with 28 genuine diamonds, Large polished silver-tone stainless steel round case with brushed accents, Textured steel crown, Polished steel selector buttons, Stainless steel caseback, Sapphire crystal, 100 meters/330 feet water resistant |
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Citizen Eco-Drive Perpetual Chrono A-T Men’s watch #AT4008-51E $575 Diving watch, Eco-Drive solar-powered technology, Overcharging prevention feature, Power reserve indicator, Radio-controlled atomic timekeeping (5 time zones: LAX, DEN, CHI, NYC, LON), Alternate time function (non-radio-controlled), Perpetual calendar (to Feb 28, 2100) featuring day and year subdials, Chronograph featuring 60-minute subdial, Alarm mode, Standard/Daylight Saving Time feature, 12/24-hour format, Polished silver-tone sword hands with luminous accents and white sweep seconds/indicator hand, Polished white/red hands mark subdials, Applied luminescent polished silver-tone hour markers, Black/white print, Arabic numbers and indices mark subdials, White indices form surrounding minute track, Analog date aperture at four o’clock, Brushed black dial with matte gunmetal-tone textured guilloche pattern at center and glossy white logo below twelve o’clock, Brushed silver-ion-plated stainless steel bracelet with polished detailing, adjustable links and push-button-clasp, Polished black-ion-plated stainless steel bezel with brushed top ring and engraved white tachymeter scale, Brushed/polished silver-ion-plated stainless steel round case, Textured ion-plated steel crown, Polished ion-plated steel selector buttons, Stainless steel caseback, Anti-reflective sapphire crystal, 200 meters/660 feet water resistant |
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Citizen Eco-Drive Perpetual Chrono A-T Men’s watch #AT4007-54E $599 Diving watch, Eco-Drive solar-powered technology, Overcharging prevention feature, Power reserve indicator, Radio-controlled atomic timekeeping (5 time zones: LAX, DEN, CHI, NYC, LON), Alternate time function (non-radio-controlled), Perpetual calendar (to Feb 28, 2100) featuring day and year subdials, Chronograph featuring 60-minute subdial, Alarm mode, Standard/Daylight Saving Time feature, 12/24-hour format, Polished silver-tone sword hands with luminous accents and white sweep seconds/indicator hand, Polished silver-tone hands mark subdials, Applied luminescent polished silver-tone hour markers, Black/white print, Arabic numbers and indices mark subdials, White indices form surrounding minute track, Analog date aperture at four o’clock, Brushed black dial with matte gunmetal-tone textured guilloche pattern at center and glossy white logo below twelve o’clock, Brushed black-ion-plated stainless steel bracelet with polished detailing, adjustable links and push-button-clasp, Polished black-ion-plated stainless steel bezel with brushed top ring and engraved tachymeter scale, Brushed/polished black-ion-plated stainless steel round case, Textured black-ion-plated steel crown, Polished black-ion-plated steel selector buttons, Stainless steel caseback, Anti-reflective sapphire crystal, 200 meters/660 feet water resistant |
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Citizen Eco-Drive Perpetual Chrono A-T Men’s watch #AT4004-52E $575 Diving watch, Eco-Drive solar-powered technology, Overcharging prevention feature, Power reserve indicator, Radio-controlled atomic timekeeping (5 time zones: LAX, DEN, CHI, NYC, LON), Alternate time function (non-radio-controlled), Perpetual calendar (to Feb 28, 2100) featuring day and year subdials, Chronograph featuring 60-minute subdial, Alarm mode, Standard/Daylight Saving Time feature, 12/24-hour format, Polished gold-tone sword hands with luminous accents and white sweep seconds/indicator hand, Polished gold-tone hands mark subdials, Applied luminescent polished gold-tone hour markers, Black/white print, Arabic numbers and indices mark subdials, White indices form surrounding minute track, Analog date aperture at four o’clock, Brushed black dial with matte gunmetal-tone textured guilloche pattern at center and glossy white logo below twelve o’clock, Brushed silver-tone stainless steel bracelet with polished gold-tone detailing, adjustable links and push-button-clasp, Polished gold-tone stainless steel bezel with brushed silver-tone top ring and engraved tachymeter scale, Brushed/polished silver-tone stainless steel round case with polished gold-tone accents, Textured gold-tone steel crown, Polished gold-tone steel selector buttons, Stainless steel caseback, Anti-reflective sapphire crystal, 200 meters/660 feet water resistant |
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Nixon Watches Rubber 42-20 Chrono Watch $374.95 Rubber 42-20 Chrono Watch |
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Asics Square Chrono QA4120303 Watch $49 Asics Square Chrono QA4120303 Watch |
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Asics Square Chrono QA4127301 Watch $60 Asics Square Chrono QA4127301 Watch |
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Nixon The 51-30/51-30 Chrono (Full Body) $14.99 Nixon The 51-30/51-30 Chrono (Full Body) |
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Nixon Watches 42-20 Chrono $499.95 The 42-20 Chrono from Nixon meshes style with durability. |