CITIZEN ECO-DRIVE AT2600-57E CHRONOGRAPH STAINLESS STEEL MEN WATCH
AT2600-57E
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- 3 Years Warranty
The Citizen AT2600-57E is a chronograph that dresses up rather than down. A black textured dial carries Roman numeral hour markers instead of the usual batons, with silver-tone rings framing the sub-dials to add depth against the dark surface. The result reads closer to a dress watch than the sports chronographs it shares a movement with.
Underneath is Caliber H504 Eco-Drive — a light-powered movement that never needs a battery, accurate to approximately ±15 seconds a month and holding a charge for around 5 months in complete darkness. The chronograph measures to 1/5 of a second across a 60-minute range, and a 12/24-hour display works alongside it.
The 41mm stainless steel case is 11mm thick — restrained for a chronograph, where 13mm and up is common — so it clears a shirt cuff in a way most chronographs do not. It sits on a matching stainless steel bracelet with a push-button clasp, is protected by mineral glass, and is water resistant to 100 metres.
At a Glance
- BrandCitizen
- CollectionEco-Drive
- MovementCaliber H504 Eco-Drive
- Case Size41mm
- Thickness11mm
- DialBlack, Textured
- MarkersRoman Numerals
- Chronograph1/5 Second, 60 Minutes
- Case & BraceletStainless Steel, Silver-Tone
- GlassMineral
- Power ReserveApprox. 5 Months
- Water Resistance100 Metres
Why You'll Love It
- Roman numerals on a chronograph is an unusual combination. Most chronographs use batons or Arabic numerals for legibility at speed — the Romans here signal that this one is meant for the office, not the track.
- At 11mm, it is genuinely slim for a chronograph. The extra sub-dial machinery normally pushes these cases past 13mm, which is where they stop fitting under a cuff.
- The textured black dial catches light differently as the wrist moves, so it reads as a flat dark surface at a distance and shows its finish up close.
- Silver-tone rings around the sub-dials separate them from the black dial cleanly — without them, sub-dials on a dark face tend to disappear into the background.
- Eco-Drive means no battery, ever. The watch charges from any light and holds roughly 5 months of reserve in complete darkness.
- A 1/5-second chronograph is a real stopwatch, not decoration — precise enough for anything you would actually time by hand.
- The 12/24-hour display gives you a second way to read the time, useful if you work to a 24-hour clock or coordinate across time zones.
- 100-metre water resistance is more than a dress-leaning chronograph usually offers, and covers swimming as well as everyday wear.
- ±15 seconds a month is solid quartz accuracy, and the Insufficient Charge Warning tells you when the reserve is running low before the watch stops.
- 41mm sits just above the standard men's size — enough presence to carry the sub-dials without tipping into oversized.
Perfect For
- Office & Business Formal
- Chronograph Collectors
- Eco-Drive & Solar Watch Fans
- Black Dial Collectors
- Roman Numeral Dials
- Slim Chronograph Fans
- Everyday Wear
- Milestone Gift
Key Features
- Citizen Eco-Drive Caliber H504 — light-powered movement, no battery required, accurate to approximately ±15 seconds per month and holding a charge for around 5 months in full darkness.
- 1/5-second chronograph — stopwatch function measuring elapsed time up to 60 minutes.
- 12/24-hour time display — a second reading of the time, working alongside the chronograph function.
- Date display — date window on the dial.
- Black textured dial with Roman numeral hour markers — silver-tone hands and silver-tone rings framing the sub-dials for contrast and depth.
- Luminous hands and markers — for legibility in low light.
- 41mm stainless steel case — 11mm thick, silver-tone finish.
- Matching stainless steel bracelet — silver-tone, with a push-button clasp.
- Mineral glass — covers and protects the dial.
- Insufficient Charge Warning Function — alerts you when the power reserve is running low.
- Overcharge Prevention Function — protects the cell automatically in strong light.
- 100-metre water resistance (10 BAR) — rated for handwashing, rain, everyday splashes and swimming.
Technical Specifications
The Citizen AT2600-57E is a 41mm men's Eco-Drive chronograph powered by Caliber H504, a light-powered movement requiring no battery and accurate to approximately ±15 seconds per month. The stainless steel case measures 11mm thick with mineral glass and is water resistant to 100 metres. The black textured dial carries Roman numeral hour markers with silver-tone sub-dial rings, a date display and a 12/24-hour display. The chronograph measures to 1/5 of a second across a 60-minute range. A full charge holds for approximately 5 months without further light exposure, with Insufficient Charge Warning and Overcharge Prevention functions built in. It is finished on a matching silver-tone stainless steel bracelet with a push-button clasp.
| Model Number | AT2600-57E |
| Case Material | Stainless Steel |
| Case Diameter | 41mm |
| Case Thickness | 11mm |
| Case Finish | Silver-Tone |
| Glass | Mineral |
| Water Resistance | 100 Metres (10 BAR) |
| Colour | Black, Textured |
| Markers | Roman Numerals |
| Hands | Silver-Tone, Luminous |
| Sub-Dial Rings | Silver-Tone |
| Display | Hours, Minutes, Seconds, Date, 12/24-Hour, Chronograph |
| Material | Stainless Steel, Matching Case |
| Colour | Silver-Tone |
| Clasp | Push-Button |
| Caliber | Citizen H504 |
| Type | Eco-Drive (Light-Powered) |
| Accuracy | Approx. ±15 Seconds/Month |
| Chronograph Resolution | 1/5 Second |
| Chronograph Range | Up To 60 Minutes |
| Full Charge Reserve | Approx. 5 Months |
| Functions | Chronograph, Date Display, 12/24-Hour Display, Insufficient Charge Warning, Overcharge Prevention |
| Battery | Not Required |
| Gender | Gent |
Best Matched With
- Charcoal Suit
- White Dress Shirt
- Black Leather Shoes
- Navy Overcoat
- Grey Wool Trousers
- Silver Tie Bar
Frequently Asked Questions
How precise is the chronograph?
It measures to 1/5 of a second and times elapsed periods of up to 60 minutes. That is a working stopwatch — accurate enough for anything you would realistically time by hand, from a workout interval to a cooking step.
What is Eco-Drive?
Eco-Drive is Citizen's light-powered movement technology. A cell beneath the dial converts any light source — sunlight, a lamp, an overhead office light — into energy stored in a rechargeable cell, so the watch never needs a battery.
How long does the charge last if I stop wearing it?
Approximately 5 months from a full charge with no further light exposure. The Insufficient Charge Warning function alerts you before the reserve runs out, so you have notice before it stops.
Does using the chronograph drain the charge faster?
Running the chronograph does draw more power than normal timekeeping, so heavy stopwatch use will shorten the reserve. In everyday conditions the watch charges from ambient light faster than it depletes, so this is not something you need to manage — and the charge warning function will tell you if the reserve does run low.
What is the 12/24-hour display for?
It gives you a second reading of the time in 24-hour format alongside the standard 12-hour dial. Useful if you work to a 24-hour clock, read timetables or flight schedules, or coordinate across time zones.
How accurate is it?
Approximately ±15 seconds per month — standard high-accuracy quartz performance, and considerably more precise than a mechanical watch of comparable price.
Can I swim with this watch?
The case is rated to 100 metres, which covers handwashing, rain, everyday splashes and swimming. It is not intended for diving or high-impact water sports. As with any chronograph, do not operate the pushers while the watch is submerged.
What is mineral glass?
Mineral glass is hardened glass used to cover and protect the dial. It is the standard crystal across much of Citizen's Eco-Drive range. Citizen's higher-tier models use sapphire crystal instead, which offers greater resistance to scratching.
Will 41mm fit my wrist?
41mm sits just above the standard men's size and suits medium to larger wrists comfortably. The more relevant number here is the 11mm thickness — slim for a chronograph, which means it sits flatter and clears a shirt cuff more easily than the diameter alone would suggest.
Is the bracelet adjustable?
Yes. The bracelet can be resized by adding or removing links, and City Chain offers complimentary bracelet sizing at any outlet — bring your warranty book along for the service.
What warranty does this watch come with?
The AT2600-57E comes with a City Chain Singapore warranty when purchased from an authorised outlet. Keep your warranty card and proof of purchase — both are required when submitting the watch for service at any City Chain outlet.
Why Buy from City Chain Singapore
- Authorised Retailer 100% genuine Citizen product
- Warranty Included Covered on every purchase
- Free Shipping All orders within Singapore
- Bracelet Adjustment Size it in-store
Extra $15 OFF with min. $200 spend
Use Code: FORYOU15
Extra $30 OFF with min. $400 spend
Use Code: FORYOU30
Caliber No.: H504
Movement: Eco-Drive
Strap: Stainless Steel
Water Resistant: Water Resistant to 100m
Thickness: 11mm
Case Size: 41mm
Case: Stainless Steel
Glass: Mineral Glass
Maximum run time from full charge (Normal Use Condition): Approximately 5 months
Chronograph
Date and Day Display
Eco-Drive
Insufficient Charge Warning Function
Overcharge Prevention Function
Gender: Male
Delivery within Singapore
Order by 11AM
(Mon - Fri for faster processing)
Checkout options may vary depending on order value and eligibility.
• Free Speedpost Domestic Delivery — 1–2 business days
• Free DHL Domestic Delivery — next business day
• Express Delivery — S$30, order by 2PM
• Click & Collect — ready in 2–3 business days. Please wait for the collection confirmation email before visiting the store.
Weekend & Public Holiday Orders
Orders placed after the applicable cut-off time, on weekends, or on public holidays will be processed on the next business day. Delivery will take place on the next available business day based on the selected delivery service.
During peak periods, festive seasons, major launches or sale events, additional processing and delivery time may be required.
For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.
