CITIZEN AT2587-02E ECO-DRIVE CHRONOGRAPH MEN WATCH
AT2587-02E
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- 3 Years Warranty
The Citizen Brycen AT2587-02E is a sport chronograph that wears boldly — a 44.8mm black-tone stainless steel case with blue accents on its racing-style pushers, and a black dial carrying three sub-dials and an internal light blue tachymeter scale for measuring speed.
A rotating 60-minute bezel adds genuine functionality beyond the chronograph itself, and luminous hands keep the dial readable in low light. The chronograph times to 1 second across a full 60 minutes, with 12/24-hour time and a date indicator at 4 o'clock.
Powering it is Citizen's Caliber H500 Eco-Drive movement, charged by any light source — natural or artificial — so there's no battery to replace, ever. Mineral glass protects the dial, the case is water resistant to 100 metres (suitable for swimming and snorkelling), and a durable black silicone strap secures it on the wrist.
At a Glance
- BrandCitizen
- CollectionBrycen, Eco-Drive Chronograph
- MovementCaliber H500 Eco-Drive
- Case Size44.8mm
- Thickness11.6mm
- DialBlack with Blue Accents
- BezelRotating 60-Minute
- Chronograph1 Second, 60 Minutes
- Date4 O'Clock
- StrapBlack Silicone
- GlassMineral
- Water Resistance100m
Why You'll Love It
- The rotating 60-minute bezel is a genuinely functional feature — set it against the minute hand to track elapsed time independently of the chronograph, useful for parking, cooking or intervals.
- Blue accents on the pushers and the internal tachymeter ring lift this well clear of the standard all-black sport chronograph without making it loud.
- The tachymeter scale lets you calculate average speed over a known distance — a proper motorsport-derived function, not decoration.
- No battery, ever. Eco-Drive converts any light — sunlight or an office lamp — into the energy that runs the watch, so there's no dead-battery surprise and no replacement visit.
- 100 metres of water resistance genuinely covers swimming and snorkelling, not just splashes — unusual for a chronograph at this level.
- The chronograph times a full 60 minutes to the second, alongside a 12/24-hour display that makes AM/PM unambiguous at a glance.
- A silicone strap is more comfortable than steel in heat and humidity, and shrugs off water — a sensible pairing for a 100m sports watch.
- At 44.8mm this has real presence, but at just 11.6mm thick it stays flatter on the wrist than its diameter suggests.
Perfect For
- Sport Chronograph Fans
- Eco-Drive & Solar Watch Fans
- Larger Wrists & Bold Styling
- Swimming & Water Activities
- Motorsport & Tachymeter Interest
- Active & Outdoor Lifestyle
- Gift for Him
Key Features
- Black dial with blue accents — including racing-style pushers and an internal light blue tachymeter ring.
- Rotating 60-minute bezel — for tracking elapsed time independently of the chronograph.
- Internal tachymeter scale — for calculating average speed over a known distance.
- 1-second chronograph measuring up to 60 minutes — with three sub-dials.
- 12/24-hour time display — unambiguous AM/PM reading.
- Date indicator at 4 o'clock.
- Citizen Eco-Drive Caliber H500 — light-powered movement, no battery required, charged by natural or artificial light.
- Luminous hands — readable in low light.
- 44.8mm black-tone stainless steel case — 11.6mm thick.
- Black silicone strap — buckle clasp, comfortable in heat and water.
- Mineral glass — protecting the dial against everyday scratches.
- 100-metre water resistance (10 BAR) — suitable for swimming and snorkelling.
Technical Specifications
The Citizen Brycen AT2587-02E is a 44.8mm men's Eco-Drive sport chronograph powered by Caliber H500, a light-charged movement requiring no battery. The black-tone stainless steel case measures 11.6mm thick with a rotating 60-minute bezel and mineral glass over a black dial with blue accents, water resistant to 100 metres. The dial carries three sub-dials, an internal tachymeter scale, luminous hands, a 12/24-hour display and a date indicator at 4 o'clock, with a chronograph timing to 1 second across 60 minutes. It's finished on a black silicone strap with a buckle clasp.
| Model Number | AT2587-02E |
| Collection | Brycen |
| Case Material | Black-Tone Stainless Steel |
| Case Shape | Round |
| Case Diameter | 44.8mm |
| Case Thickness | 11.6mm |
| Bezel | Rotating 60-Minute |
| Glass | Mineral |
| Water Resistance | 100 Metres (10 BAR) |
| Colour | Black with Blue Accents |
| Sub-Dials | Three |
| Tachymeter | Internal Ring, Light Blue |
| Chronograph | 1 Second, up to 60 Minutes |
| Date | 4 O'Clock |
| Hands | Luminous |
| Display | Hours, Minutes, Seconds, Date, 12/24-Hour, Chronograph |
| Material | Silicone |
| Colour | Black |
| Clasp | Buckle |
| Caliber | Citizen H500 |
| Type | Eco-Drive (Light-Powered) |
| Battery | Never Required |
Best Matched With
- Technical Outerwear
- Dark Denim
- Athletic Wear
- Weekend Casual
- Beach & Water Sports
- Travel Essentials
Frequently Asked Questions
What is the rotating bezel for?
It's marked in 60 minutes and turns, so you can line the marker up against the minute hand to track elapsed time — handy for parking, cooking or workout intervals, and it works independently of the chronograph so you can run both at once.
What does the tachymeter do?
A tachymeter calculates average speed over a known distance. Start the chronograph at the beginning of a measured kilometre or mile, stop it at the end, and the tachymeter scale shows your average speed. On this watch the scale sits on an internal ring in light blue.
Is the strap blue or black?
Black. The blue on this watch is accent detailing — on the racing-style pushers and the internal tachymeter ring — against a black dial, black-tone case and black silicone strap.
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.
Do I need to charge it deliberately?
No. Normal daily wear gives it more than enough light to stay charged — through a shirt cuff, under office lighting, or outdoors. If it has been stored in the dark for a long period, a few hours in daylight brings it back.
Can I swim with this watch?
Yes. At 100 metres (10 BAR), it's rated for swimming and snorkelling. It isn't designed for scuba diving.
Does an Eco-Drive watch need servicing?
Far less than a mechanical watch — there's no mainspring or balance assembly to wear in the same way. The rechargeable cell is designed to last many years under normal use. Bring it to any City Chain outlet if you notice reduced charge retention over time.
Will 44.8mm fit my wrist?
44.8mm is a large sport watch and suits larger wrists best — it's designed to wear boldly. That said, at just 11.6mm thick it sits flatter than its diameter suggests, and the silicone strap conforms comfortably. Worth trying on in-store if you're unsure.
Is the strap adjustable?
Yes. The silicone strap closes with a standard buckle and can be sized as needed. City Chain can assist with fitting in-store if required.
What warranty does this watch come with?
The AT2587-02E comes with a 3-year warranty when purchased from City Chain Singapore, an authorised Citizen retailer. 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
- 3-Year Warranty Covered on every purchase
- Free Shipping All orders within Singapore
- Strap Fitting Assist in-store
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Caliber No.: H500
Movement: Eco-Drive (Light-Powered)
Maximum Run Time: Approx. 5 months (fully charged)
Functions: Chronograph, Day & Date Display
Features: Insufficient Charge Warning, Overcharge Prevention
Case & Build:
Case Size: 44.9mm
Case Thickness: 11.6mm
Case Material: Stainless Steel
Glass: Mineral Glass
Strap: Silicone Strap
Water Resistance: 100 metres
Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)
• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)
Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.
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.
