| Reference Ocarat | #49144 |
| Reference | 18142.PBAM.BS.4.NB |
| Brand | Briston |
| Product Type | Watch |
| Gender | Men |
| Color | Black |
| Material | Synthetic |
| Material Quality | Cellulose acetate |
| Warranty | 2 Years |
| Length (in mm) | 42,00 |
| Width (in mm) | 42,00 |
| Thickness (in mm) | 11,90 |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Cushion |
| Bezel | Steel |
| Dial Finish | Matte |
| 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) |
| Number of Counters (Additional) | 2 |
| Bracelet Material | Nato |
| Strap Color | Black |
| Water Resistant | Yes |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | 20,00 |
| Collection | Briston Clubmaster Sport Acetate |
The Watch
Blacked out from head to toe, this sleek timepiece gets its adventurous edge from a NATO strap. This chronograph watch features a cushion-shaped case crafted from black cellulose acetate, manufactured in Italy, hand-polished to a matte finish, and measuring 42 x 42mm. A great fit for men's wrists, it can also be worn by women looking for an oversized style. Three buttons punctuate the case: a screw-down crown engraved with the brand's crest at 3 o'clock, and two pushers at 2 and 4 o'clock - all in matte black PVD-treated 316L stainless steel. A round bezel with the same finish surrounds a 2.3mm domed mineral glass crystal.
The Dial
A matte black dial hosts three hands: the hour and minute hands are matte black PVD baton-style with sandy beige inserts, while the seconds hand is beige lacquered with a red tip. Skeletonized indexes in matte black PVD-treated stainless steel ring the dial. There is no minute track, but a tachymeter scale runs along the outer edge to measure the speed of a moving object. A date window in black numerals on a white background sits at 6 o'clock, with "Clubmaster" and the water resistance rating of 100m printed above. The chronograph dial features a 60-minute counter at 9 o'clock and a 24-hour counter at 3 o'clock - both in black with beige indexes and hands. The brand name, Briston, appears beneath the 12 o'clock index.
The Movement
This timepiece is powered by a Japanese-made quartz Miyota OS21 movement, offering hours, minutes, seconds, 24-hour, 60-second, chronograph, and date functions.
The Strap
A black NATO strap perfectly in tune with the watch's bold aesthetic adds a rugged, military-inspired edge. Worth noting: NATO straps - short for North Atlantic Treaty Organization - have genuine military roots. They were originally commissioned by the British Ministry of Defence in the 1960s to withstand the demands of military life. Measuring 280mm in length with a 20mm lug width, this strap is both interchangeable and water-resistant. The keepers and pin buckle are crafted from 316L stainless steel with a matte black PVD treatment.
Water Resistance
At 10 atmospheres - 100 meters of water resistance - this watch earns its "waterproof" credentials. Built for the bath, shower, or active swim, it's not suited for diving (recreational or professional) or high-pressure water cleaning. One important note: the Ocarat watch team recommends keeping the crown and pushers untouched during any water activity to protect the seal and the movement's integrity.
Want to make this watch truly yours?
For an extra 10,00 €, personalize it with up to 12 characters
(see photo examples featuring our 2 font options).
Please note: in accordance with our general terms and conditions of sale, personalized items cannot be returned or exchanged. Rest assured, however, that the manufacturer's warranty remains valid for 2 years.


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Briston Clubmaster Sport Acetate Matte Black Chronograph Watch
(Ref. 49144)