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CITIZEN

Citizen Men's Eco-Drive Calendrier Classic Watch, 12/24 Hour Time, 3-Hand Day and Date, Chronograph, Luminous Hands

  • Based on 1,429 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, May 12
Order within 6 hours and 16 minutes
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Color: Stainless/Blue


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 0.59 x 0.59 x 0.59 inches; 6.07 ounces


Item model number ‏ : ‎ BU2021-51L


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 Lithium Ion batteries required. (included)


Date First Available ‏ : ‎ January 20, 2015


Manufacturer ‏ : ‎ Citizen Watch Company


Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.:


Best Sellers Rank: #166,852 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #461 in Men's Wrist Watches


Display: Analog


Watch Movement Type: Eco-Drive


Additional Features: Anti-Reflective Mineral Crystal, Day/Date, Glow In The Dark


Power Source: Battery Powered


Strap Type: Bracelet


Water Resistance Depth: 100 Meters


Sport Type: Swimming, snorkeling


Clasp Type: Push Button Deployment Clasp


Water Resistance Level: Water Resistant


Embellishment Feature: Crystal


Closure Type: Foldover, Push-Button


Style Name: Watches


Shape: Round


Band Color: Silver


Dial Color: Blue


Pattern: Solid


Face Style: Sector or Crosshair


Brand Name: CITIZEN


Model Name: BU2021-51L


Model Number: BU2021-51L


Item Weight: 172 Grams


Global Trade Identification Number: 05


Manufacturer: Citizen Watch Company


UPC: 013205110405


Manufacturer Part Number: BU2021-51L


Unit Count: 1 Count


Age Range Description: Adult


Item Type Name: Watch


Band Material Type: Stainless Steel


Case Material Type: Stainless Steel


Crystal: mineral


Case Diameter: 44 Millimeters


Band Width: 23 Millimeters


Case Thickness: 8.5 Millimeters


Band Length: 5 Inches


Bands: 1


Warranty Type: Limited


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If you place your order now, the estimated arrival date for this product is: Tuesday, May 12

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Top Amazon Reviews

    • Awesome watch
Color: Navy/Silver-tone
I bought this to replace a Seiko 5 that broke after 10 years of use (not the watch’s fault it broke). I was a little hesitant to get another automatic watch because I was only wearing it on days I worked, and winding up after my weekend was not my favorite thing. After some research I decided on the Citizen Eco-drive movement. I also wanted something with a day/date feature and 24 hour time on the dial. The world clock feature was a huge bonus as I travel often. I was very happy to find this watch with all the features I wanted and nothing I didn’t need. I was concerned about the size as I had never had a 44mm case and I don’t have big arms, but I measured and cut a diagram on a piece of paper and taped it on my wrist and decided it would be a good size. I will say I wouldn’t want to go any bigger than this, but the utility and readability is well worth a little extra real estate over my previous watch. Pros Looks better in person - elegant without being overly dressy Very easy to set. The analog calendar turned out to be faster to adjust than I imagined. Easy to use the world clock feature. Just check the 24 hour hand and then use the lower dial to turn the outer ring to match that number to your current time zone, and you can see what hour it is anywhere in the world. It looks smaller in person than I imagined, probably because there is so much going on on the face. It is very quiet. I tried a few other watches and the timex in particular was annoyingly loud. This one is almost dead silent for me. Solar powered, no battery replacement or winding needed. Mine came with a decent charge out of the box, but I still put it in the sun for a few hours before setting it. Refer to the manual for specifics. Looks great with NATO straps. I swapped out the leather strap right away because it is hot where I live now and I’m not a huge fan of colored leather. Cons Included strap is a bummer. The quality seems fine but I couldn’t figure out how to adjust it by myself and the manual suggested I consult a watch fitter. Pish posh. I popped it off with a tiny screwdriver and threw on a cheap NATO strap in a few minutes and never looked back. On that note, I might have made more effort if the included strap was brown or black. Blue leather just seems icky to me. But if that’s your thing, and you don’t mind taking the time to get it sized up, I guess it seems like a decent quality for the price ... show more
Reviewed in the United States on June 4, 2024 by Neil Kirchner
    • Best of Both Worlds
Color: Navy/Silver-tone
Been wanting this one for a while, and grabbed it when it went down $100 in price. It's a great watch, informative and classy at the same time. The second hand can be a bit difficult to spot - it's the slimmest hand I've ever seen. I replaced the double butterfly clasp croc band - I loathe double clasps - with a straightforward black leather band that works well with the dial. This was a good add to my collection. ... show more
Reviewed in the United States on February 11, 2026 by Stimpy
    • Beautiful Blue Dial, Lots of Useful Info, Quality Watch
Color: Stainless/Blue
Review Image by Nick
Review Image by Nick
Review Image by Nick
Review Image by Nick
Review Image by Nick
Review Image by Nick
Review Image by Nick
Review Image by Nick
Review Image by Nick
Review Image by Nick
The blue dial is definitely my fav. feature and I think the main highlight of this striking watch. In person, it often has a darker shade of blue similar to navy blue, as supposed to the light "baby blue" seen on some pictures. The deep shade of blue changes to a nice, reflective lighter blue depending on light angle. It's pretty cool. This looks best under low/indoor lighting. I love good-looking watches as much as the next person, but if the design can incorporate useful functions as well, it's a winner for me. And this watch does all of that. It has Day of the week, Date of the month, 24/hr, and different timezones calculations. And it's solar-powered, so no need to worry about battery changes every few years, which is a plus for an everyday watch. Build quality seems very nice to the touch. Bracelet is medium weight and solidity, not too noisy nor ultra quiet. The clasp has these beautiful brushed marking that look very classy (see pics). Overall, good watch for the price. I think one of the few unique ones with the features and good appearance at the pricepoint 👍 ... show more
Reviewed in the United States on June 9, 2023 by Nick
    • Crazy good Citizen watch series ... highly recommended!
Color: Navy/Silver-tone
Review Image by Ed B.
Review Image by Ed B.
Review Image by Ed B.
Love this Citizen model. First one of the series I've owned, for me, has a great look. Arrived on time, packaged great, and OEM fresh. The watch itself is a perfect size for my wrist, was easy to set, and is easy to take in the data it provides. Love the white dial, blue leather band combination. Band is an excellent quality leather. The clasp took me a minute to get used to, but is super convenient now that I've used it a few times. Would highly recommend this watch, especially at this price point. ... show more
Reviewed in the United States on April 26, 2025 by Ed B.
    • Love it
Color: Navy/Silver-tone
Really nice watch. Time zone thing doesn’t quite work in some ways due to daylight savings time, but it’s not a big deal to me.
Reviewed in the United States on December 23, 2025 by aarbrock
    • Works fine
Color: Navy/Silver-tone
Little large, good looking
Reviewed in the United States on March 9, 2026 by wltgl
    • fas
Color: Navy/Silver-tone
good and fast
Reviewed in the United States on January 30, 2026 by Carlos E Vargas
    • The solid Quality of the watch is evident.
Color: Stainless/Blue
The watch was well received and is an engineering marvel - Made a great gift
Reviewed in the United States on December 28, 2025 by G. Austin

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