$396.00 MSRP $495.00

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$396.00 MSRP $495.00

Adventure to new heights with the Citizen Ecosphere. A black on black sleek sporty timepiece featuring a 1/5-second chronograph measuring up to 60 minutes, 12/24-hour time and date. A black ion-plated stainless steel case and bracelet and black dial. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number B620.

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We stand by the quality and craftsmanship of our timepieces. Every purchase comes with our 30-day, money-back guarantee so that you can be sure your new Citizen timepiece meets your expectations. We offer free returns for added convenience. 

Our 5 Year Limited Warranty accompanies your watch purchase on, Citizen retail stores, and authorized Citizen dealers. Register your watch on and receive 1 additional year warranty coverage free of charge.

CZ Smart smartwatches are covered by a 2 Year Limited Warranty.

Citizen Clocks are covered by a 1 Year Limited Warranty.


Our Five-Year Limited Warranty about the Citizen 5 Year Warranty

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Mens, Bracelet



Case Size (mm)


Case Material

Black, Stainless Steel


WR100/10Bar/333ft [Swimming, Showering & Snorkeling]


Mineral Crystal


B620, 1/5 Second Chronograph Measures up to 60 Minutes, 12/24 Hour Time, Date

Setting Instructions FOR CALIBER B620
Download PDF Watch Video
Ecosphere is rated 4.3 out of 5 by 29.
Rated 4 out of 5 by from Great tactical black look! I received this as a wedding gift from my wife and I love it. I am in the Air Force and wear a uniform everyday. It's nice to have a fancier watch that still looks great with fatigues or dress blues. My only complaint is that it can be hard to read the time in low light since it is black and the hands don't glow.
Date published: 2017-01-21
Rated 4 out of 5 by from Great watch! This is a great looking watch with great features. Would have given it 5 stars but it is difficult to read time at night because there is no luminescence.
Date published: 2017-01-16
Rated 1 out of 5 by from Watch Band Changed Color My wife bought me this watch to be added to my collection since my other Citizen watch needed to be fixed during COVID. I've had the watch for maybe two months and the band is already changing to stainless.I had really high hopes for this and it's not the quality I expect from a Citizen watch. If the hands on the watch illuminated at night, it would make it easier to see as well.
Date published: 2020-06-11
Rated 1 out of 5 by from Not Accurate I was given this watch as a gift to replace a Buliva (sp?) from a respectable jewelry store. I am very disappointed in the date feature. Every month it will advance 1 or 2 days on it's own which becomes a pain to get back to proper date. Also it would have been helpful if I had read reviews before buying about the hands not being able to read in the dark.
Date published: 2019-04-12
Rated 5 out of 5 by from Great looking watch! I bought this watch as a gift for myself. I love the sleek look of the black and the heavy substantial feel of the watch itself. Great quality and value all wrapped up into one great looking watch!
Date published: 2017-01-14
Rated 4 out of 5 by from Wet good watch Bought this months ago and have really enjoyed it, has only lapsed on keeping correct time twice, not sure why, is not a recurring issue.
Date published: 2017-01-11
Rated 5 out of 5 by from Rating on purchase It’s for a gift.... but my father has had Citizen watches and he loved them I’m hoping my friend likes his gift
Date published: 2021-05-08
Rated 4 out of 5 by from Great but.... I was very happy about the watch until I realized it was scratched right above the where the 12 would be it is barely noticeable but now that I know it's there it's all I can see when I look at the time. I guess I'm going to look into what I can do to get it touched up or what ever I can do. I just ordered the drive for my father for Father's day I'm sure he'll love it thanks.
Date published: 2021-06-18
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Does the hands on this watch glow in the dark?

Asked by: Rogelio 10
They do not
Answered by: Mazz448
Date published: 2019-11-07

Is watch already fully charged when you receive it?  (Mailed to me)

Asked by: Ange1107
Answered by: urkell
Date published: 2019-05-16

How much does it weight?

Asked by: Db2000
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