CITIZEN BN0261-51E PROMASTER ECO-DRIVE 200M DIVER MEN WATCH
BN0261-51E
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- Backordered, shipping soon
- 20% off in cart
- 3 Years Warranty
The Citizen Promaster Dive BN0261-51E is a properly built ISO-compliant diver in the most classic configuration there is: a sunray black dial with large applied markers and heavy lume, a black unidirectional bezel, and a 41mm silver-tone stainless steel case on a matching triple-link bracelet.
Two details lift it above the obvious. It's protected by sapphire crystal — noticeably harder than the mineral glass most divers at this level use. And the bracelet includes a wetsuit extender that doubles as a tool-less micro-adjust, so you can fine-tune the fit by hand as your wrist swells in heat. That's a diving feature with genuine everyday value.
Powering it is Citizen's Caliber E168 Eco-Drive, charged by any light with roughly 180 days of reserve — no battery, ever. The case is water resistant to 200 metres with a screw-down crown and caseback, and a date window sits at 3 o'clock. It arrives in an exclusive dive tank box.
At a Glance
- BrandCitizen
- CollectionPromaster Dive
- MovementCaliber E168 Eco-Drive
- Case Size41mm
- ThicknessApprox. 11.5mm
- Lug-to-LugApprox. 47.5mm
- WeightApprox. 150g
- DialBlack Sunray
- BezelBlack, Unidirectional
- GlassSapphire
- Power ReserveApprox. 180 Days
- Water Resistance200m, ISO-Compliant
Why You'll Love It
- Sapphire crystal on a diver at this price is a genuine step up — significantly harder and more scratch-resistant than the mineral glass most comparable divers use.
- The wetsuit extender doubles as a tool-less micro-adjust, so you can fine-tune the bracelet by hand as your wrist swells in heat. In a humid climate that's an everyday benefit, not just a diving one.
- Genuine ISO compliance means this meets the recognised international standard for dive watches, not just a "water resistant" marketing claim.
- Despite its 41mm diameter, downward-curving lugs mean it wears noticeably smaller than the specification suggests — comfortable on a wider range of wrists than the number implies.
- The case is brushed across its surfaces with high-polished bevels — a finishing detail that catches light and looks considerably more expensive than it is.
- A sunray black dial with large applied markers and heavy lume is about as legible as a dive watch gets, above or below the water.
- No battery, ever. Eco-Drive runs on any light source, with roughly 180 days of reserve from a full charge.
- It arrives in an exclusive dive tank box — genuinely distinctive packaging that makes it a better gift than a standard watch case would.
Perfect For
- Dive Watch Enthusiasts
- First Dive Watch
- Eco-Drive & Solar Watch Fans
- Everyday Versatility
- Swimming & Water Sports
- Sapphire Crystal Buyers
- Gift for Him
Key Features
- ISO-compliant dive watch — meeting the recognised international standard.
- Sunray black dial — with large applied hour markers in dots and batons, and a distinctive heavily lumed handset.
- Black unidirectional rotating bezel — with aluminium insert, for elapsed dive timing.
- Sapphire crystal — scratch-resistant and anti-reflective.
- Wetsuit extender with tool-less micro-adjust — fine-tune the bracelet fit by hand.
- Screw-down crown and caseback — for dive-rated sealing.
- Citizen Eco-Drive Caliber E168 — light-powered movement, no battery required, with approximately 180 days of power reserve.
- Date window at 3 o'clock.
- 41mm silver-tone stainless steel case — approximately 11.5mm thick, with brushed surfaces and high-polished bevels, and downward-curving lugs.
- Triple-link stainless steel bracelet — 20mm lug width, fold-over clasp with push buttons.
- 200-metre water resistance.
- Exclusive dive tank presentation box.
Technical Specifications
The Citizen Promaster Dive BN0261-51E is a 41mm men's ISO-compliant Eco-Drive diver powered by Caliber E168, with approximately 180 days of power reserve from a full charge. The silver-tone stainless steel case measures around 11.5mm thick with a 47.5mm lug-to-lug span, weighing approximately 150 grams, with brushed surfaces and polished bevels, a black unidirectional rotating bezel, screw-down crown and caseback, and sapphire crystal, water resistant to 200 metres. The sunray black dial carries applied dot and baton markers, a heavily lumed handset and a date window at 3 o'clock. It's finished on a triple-link stainless steel bracelet with a fold-over clasp, push buttons and a wetsuit extender that doubles as a tool-less micro-adjust, and supplied in an exclusive dive tank box.
| Model Number | BN0261-51E |
| Collection | Promaster Dive |
| Case Material | Stainless Steel, Silver-Tone |
| Case Diameter | 41mm |
| Case Thickness | Approx. 11.5mm |
| Lug-to-Lug | Approx. 47.5mm |
| Lug Width | 20mm |
| Weight | Approx. 150g |
| Finishing | Brushed with High-Polished Bevels |
| Bezel | Black Unidirectional, Aluminium Insert |
| Crown & Caseback | Screw-Down |
| Glass | Sapphire, Anti-Reflective |
| Water Resistance | 200 Metres, ISO-Compliant |
| Colour | Black, Sunray |
| Markers | Applied Dots & Batons, Luminous |
| Hands | Distinctive Handset, Heavily Lumed |
| Display | Hours, Minutes, Seconds, Date (3 O'Clock) |
| Material | Stainless Steel, Triple-Link, Silver-Tone |
| Clasp | Fold-Over with Push Buttons |
| Adjustment | Wetsuit Extender / Tool-Less Micro-Adjust |
| Caliber | Citizen E168 |
| Type | Eco-Drive (Light-Powered) |
| Power Reserve | Approx. 180 Days |
Best Matched With
- Everyday Casual
- Oxford Shirt
- Dark Denim
- Smart-Casual Office
- Beach & Water Sports
- Travel Essentials
Frequently Asked Questions
Is this a genuine dive watch?
Yes. It's ISO-compliant, with a screw-down crown and caseback, a unidirectional bezel and 200 metres of water resistance — built and tested to the recognised international standard for dive watches rather than simply styled like one.
What is the wetsuit extender?
It's a section of the clasp that extends the bracelet to fit over a wetsuit sleeve. On this model it also works as a tool-less micro-adjust, so you can fine-tune the fit by hand day to day — useful in heat when your wrist swells slightly, even if you never dive.
How does the rotating bezel work?
The unidirectional bezel tracks elapsed time — line up the marker with the minute hand at the start of a dive or activity, then read off elapsed time as the bezel rotates. It only turns one way, a safety feature that prevents misreading less time than has actually passed.
Is the crystal sapphire?
Yes, with an anti-reflective treatment. Sapphire is significantly harder and more scratch-resistant than the mineral glass used on many divers at this level, so the crystal stays clear through years of wear.
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 180 days — around six months — from a full charge with no further light exposure. A short session in daylight restores it.
Will 41mm fit my wrist?
41mm sits comfortably in the modern men's range, and this one wears smaller than the number suggests thanks to downward-curving lugs and a compact 47.5mm lug-to-lug span. At around 11.5mm thick it's genuinely slim for an ISO diver.
What comes in the box?
The watch is supplied in an exclusive dive tank presentation box — distinctive packaging that makes it a particularly good gift.
Is the bracelet adjustable?
Yes, in two ways. Links can be added or removed for overall sizing, and the wetsuit extender provides tool-less micro-adjustment on the fly. 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 BN0261-51E 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
- Bracelet Adjustment Size it in-store
Gift With Purchase
Free Promaster Travel Watch Pouch with every Citizen watch purchase. While stocks last.
Extra $15OFF with min. $200 spend
Use Code: 15FORYOU
Extra $30OFF with min. $400 spend
Use Code: 30FORYOU
Calibre: E168
Movement: Eco-Drive
Case Color: Silver
Case Thickness: 11.7mm
Case Diameter: 40.6mm
Case Material: Stainless Steel
Glass: Sapphire Glass
Strap Material: Stainless Steel
Strap Color: Silver
Dial Color: Black
Water Resistance: 20 ATM
Date Display
Insufficient Charge Warning Function
One-Way Rotating Elapsed Time Bezel
Overcharge Prevention Function
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.
