| Reference Ocarat | #107850 |
| Reference | 23640.S.T.2.RB |
| Brand | Briston |
| Product Type | Watch |
| Gender | Men |
| Color | Gray White |
| Material | Steel Synthetic |
| Material Quality | Cellulose acetate Stainless Steel |
| Finish | Matte (Brushed / Satin) |
| Warranty | 2 Years |
| Length (in mm) | 40,00 |
| Width (in mm) | 40,00 |
| Thickness (in mm) | 12,80 |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Barrel chain |
| Dial Finish | Soleillée Square Pattern |
| Watch Case Back | Exhibition Case Back Screwed caseback |
| Glass Quality | Sapphire Crystal |
| Watch Case Types | Date |
| Buttons | 1 Crown |
| Water Resistance (in ATM) | 5 |
| Frequency | 21,600 A/h (3 Hz) |
| Movements | Automatic (rotor) |
| Movement Type | Japanese Movement |
| Movement Brand | Seiko Corp. |
| Calibers (Movements) | Seiko NH35A |
| Calendar and Time | Dates Hours Minutes Seconds |
| Power Reserve (Maximum Duration) | 41 Hours |
| Display Type | Analog (hands) |
| Display Specifications | Arabic Numerals Indices and railroad track Luminescent Hands SuperLuminova C1 |
| Bracelet Material | Rubber Stainless Steel |
| Strap Color | Black Gray |
| Bracelet Material Finish | Brushed steel Vulcanized rubber |
| Watch Clasp | Deployment Clasp Tang Buckle |
| Lug Width (in mm) | 20,00 |
| Bracelet Size | L - 190 mm |
Briston has built a strong name in watchmaking with its robust, high-performance acetate timepieces. Designed to stand the test of time, its creations are crafted from premium materials for lasting durability. From the Streamliner Urban Auto collection, this watch brings elegant style to your wrist while making timekeeping effortless. It features a barrel-shaped case measuring 40 mm in length and width with a thickness of 12.80 mm. Crafted in stainless steel and cellulose acetate, it is fitted with a bezel showcasing screws and a brushed finish on the surface, with a mirror-polished look on the sides. The case has a dial opening of 31.50 mm, protected by an ultra-resistant 2 mm sapphire crystal that shields the movement from shocks and scratches on a daily basis. A crown at 3 o'clock provides access to the settings for hours, minutes, and date. Finally, the screw-back case features a transparent exhibition window to admire the movement, while ensuring water resistance of 5 ATM.
This dial features a white base enhanced by a square motif. The inner bezel reveals a minute track for added precision, while the outer ring is marked with baton indices and recessed black Arabic numerals indicating the hours. These markers are tracked by two central hands - the short one for hours and the long one for minutes - both coated with a Superluminova C1 treatment for excellent dark readability. The black seconds hand keeps track of the seconds. For precise timekeeping, a date window at 6 o'clock displays the date daily. The brand's name is printed at 12 o'clock, with the collection name and movement type noted opposite.
This watch is powered by a Japanese automatic movement - specifically the Seiko NH35A caliber - ensuring smooth operation of the hands and date window. It features 24 jewels to minimize friction and beats at a frequency of 21,600 vibrations per hour. Reliable and efficient, it offers a solid power reserve of 41 hours.
This timepiece comes with a choice of two straps in 20 mm lug width, each providing the perfect finishing touch to any outfit.
The first strap is crafted in silver-tone stainless steel. It is the result of solid link assembly highlighted by a brushed finish that adds to its appeal. It fastens securely via a deployment clasp for a perfect fit on the wrist and measures 156 mm in length.
The second strap is made of vulcanized rubber in black. Flexible and versatile, it pairs easily with both casual and dressed-up outfits. It fastens securely to the wrist with a pin buckle and measures 75/115 mm in length.
With a water resistance of 50 meters - or 5 ATM in watchmaking terms - this timepiece can handle splashes but shouldn't be exposed to water for extended periods. You can wear it in the shower occasionally, but to preserve the quality and precision of the movement, our watch specialists strongly recommend keeping it away from H2O - baths, pools, and the sea included. No swimming or diving, and no prolonged contact with water.


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White Streamliner Urban Auto Watch 23640.S.T.2
(Ref. 107850)