| Reference Ocarat | #43179 |
| Reference | 17142.SA.TS.2.NGA |
| Brand | Briston |
| Product Type | Watch |
| Gender | Men |
| Color | Green White |
| Material | Synthetic |
| Material Quality | Cellulose acetate |
| Warranty | 2 Years |
| Thickness (in mm) | 11,90 |
| Diameter (in mm) | 42,00 |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Cushion |
| Watch Case Back | Screwed caseback |
| Crystal Shape | Domed |
| Glass Quality | Mineral Crystal |
| Watch Case Types | Date |
| Buttons | 1 Crown 2 Pushers |
| Water Resistance (in ATM) | 10 |
| Movements | Quartz |
| Movement Type | Japanese Movement |
| Movement Brand | Miyota |
| Calibers (Movements) | Miyota OS21 |
| Calendar and Time | Dates Hours Minutes Seconds |
| Chronograph Function | Yes |
| Counters and Durations | 24h 60 min |
| Display Type | Analog (hands) |
| Display Specifications | Luminescent Hands |
| Number of Counters (Additional) | 2 |
| Bracelet Material | Nato |
| Strap Color | Green |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | 20,00 |
| Activities | Swimming / Diving Technical Adventure |
| Collection | Briston Clubmaster Sport Acetate |
The Watch
With this new addition to the Clubmaster Sport collection, Briston leans fully into the wild, adventurous spirit of the timepiece. This is a watch built for the extreme - the kind of gear you'd want on your wrist surviving the bone-chilling cold of Mount Chogori, better known as K2, straddling the China-Pakistan border. You'll need agility, a leader's mindset, and above all, the mental toughness of a hardened survivor. That's exactly what this watch channels - and exactly where it will take you.
Powered by a Japanese Miyota OS21 quartz movement and featuring five hands, it displays hours, minutes, and seconds alongside a date window and a chronograph with a 60-minute counter and 24h display. The case stays true to Briston's iconic cushion-shaped silhouette, adding a bold, masculine presence on the wrist. At 42mm long and 11.90mm thick, it's built for those who dream of adventure and exploration. A slightly domed mineral crystal tops the case, which features a screw-down caseback. The brand's crest is engraved on the crown - a nod to the heritage of this British house.
The Dial
The dial on this Briston is round, framed by the brand's signature cushion-shaped case. In black with a white sub-dial, it highlights key elements such as the two counters, the hands, the indices, and the minute track. The dial opening measures 32.5mm. It is made up of two sections: the first features an analog display of hours, minutes, and seconds via three white hands - the first two made with rhodium for exceptional luminescence in low-light conditions. The second section houses two counters and a date window at 6 o'clock. There is a 24h counter at 3 o'clock and a 60-minute counter at 9 o'clock. A black tachymeter (an instrument that measures the speed of a moving object) is also present on a bezel ring inside the dial.
The Movement
This watch is powered by a Japanese Miyota OS21 quartz movement. This caliber displays hours, minutes, seconds, and the date. Within the movement, the 60-minute counter is positioned at 9 o'clock, the 24-hour counter at 3 o'clock, and the date at 6 o'clock. A standard battery lasts approximately 3 years.
The Strap
This model features a Sport NATO strap in green, crafted from a nylon canvas. It fastens with a silver-tone pin buckle. The strap measures 235mm in length with a 20mm lug width. Built to handle water contact, it offers 100m water resistance - making it a solid companion for active swimming, though not suited for scuba diving.
Water Resistance
This model offers water resistance up to 10 atmospheres, or 100 meters - it's genuinely waterproof. Ready to dive into aquatic adventures with you, it handles everything from puddles to the pool without complaint. Showers, baths, and active swimming? No problem. That said, the Ocarat watchmaking experts want you to know that while this model is water-resistant, it is not designed for diving (professional or recreational) and should be kept away from high-pressure cleaning equipment. We also recommend against operating the crown or pushers while submerged.
Want to make this watch truly yours?
For an extra 10,00 €, personalize it with up to 12 characters
(see the photo examples for our 2 available font styles).
Please note: in accordance with our general terms and conditions of sale, once personalized, this product cannot be returned or exchanged. Rest assured, the manufacturer's warranty remains valid for 2 years.


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Briston Clubmaster Sport Acetate Chrono Military Green NATO Watch
(Ref. 43179)