World Time A-T
World Time A-T

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World Time A-T

World Time A-T



Bold, aggressive, and dimensional, Citizen Eco-Drive introduces its newest timepiece with atomic timekeeping. With Atomic Clock synchronization for superior accuracy, this perpetual calendar that keeps time in 26 time zones. In stainless steel two tone rose gold, a white dial and orange accents on the dial. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number H820.

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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 purchase on, Citizen retail stores, and authorized Citizen dealers. CZ Smart smartwatches are covered by a 2 Year Limited Warranty


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

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Mens, Bracelet


Gray, Power Reserve Indicator

Case Size (mm)


Case Material

Two-Tone, Stainless Steel


WR200/20Bar/666ft [Swimming, Showering & Snorkeling]


Anti-Reflective Sapphire Crystal


H820, Synchronized to Atomic Time Clock for Superior Accuracy, Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 26 Time Zones, Perpetual Calendar, Dual Time (Second Time Zone)
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12/24 Hour Time, Daily Alarm, Power Reserve Indicator, Day/Date
Setting Instructions FOR CALIBER H820
Download PDF Watch Video
World Time A-T is rated 4.5 out of 5 by 19.
Rated 3 out of 5 by from Nice Watch, But... Only bad thing about this watch is the big hand. The big hand is too narrow and many times difficult to see. I have to turn the watch at an angle in order to have light reflect off the big hand so that I can see it.
Date published: 2017-01-11
Rated 5 out of 5 by from Great watch with awesome feature This is my first watch from citizen , I wanted a watch which is could own for 5 years ; which works accurately , scratch resistant crystal and do not have to change the battery over time . The features in this watch is awesome with world time reversal with click ..that is great . I love my watch
Date published: 2017-01-11
Rated 5 out of 5 by from Great watch I always like wearing a watch. The issue I always have they don’t last. I’m a handyman motorcycle riding photographer. Watch last a month on my wrist! I bought this watch four years ago and it’s still working best watch I ever bought.
Date published: 2019-12-29
Rated 5 out of 5 by from Amazed! I bought this watch yesterday. I took the time to watch the instructional video to learn how to set the watch and used its other functions. I was unable to get a daytime radio signal for the watch to automatically do a time correction. To my delight when I get up this morning it had received the radio signal and the time was precise to the second. This is 1 beautiful timepiece.
Date published: 2019-05-19
Rated 5 out of 5 by from Fantastic Watch I purchased this watch 6 months ago at my local Citizen store. I couldn't be happier with the quality and style!
Date published: 2017-01-12
Rated 5 out of 5 by from Quality and dependability unmatched. I purchased this watch as a gift to myself for completion of graduate school, rather than purchasing a class ring. I wanted a watch that I would wear daily while I began my new career. I am extremely pleased with my choice, and will be a loyal Citizen watch owner from here on out.
Date published: 2019-11-07
Rated 4 out of 5 by from Great watch! I purchased this watch at a retailer that was 'out of box', and so it did not come with a manual or anything. It took me a few days of YouTube research to figure out that the hands were not calibrated correctly, but once I got it calibrated it has not missed a beat.
Date published: 2017-03-10
Rated 4 out of 5 by from Beautiful watch ! Very mice watch looks great works great only complaint very difficult to set the watch the Manuel leave a lot to be desired ! I have numerous Citizen watches this is the worst to set time and date !
Date published: 2021-02-07
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