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| Reference Ocarat | #19862 |
| Reference | 857.010 |
| Brand | Sinn |
| Product Type | Watch |
| Gender | Men |
| Color | Black |
| Material | Steel |
| Material Quality | Stainless Steel |
| Finish | TEGIMENT Treatment |
| Warranty | 3 years |
| Thickness (in mm) | 12,00 |
| Diameter (in mm) | 43,00 |
| Manufacturing | Germany |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Round |
| Case Weight (in g) | 90,00 |
| Bezel | Bidirectional Visual Countdown |
| Watch Case Back | Screwed caseback |
| Crystal Shape | Flat |
| Glass Quality | Sapphire Crystal |
| Glass Treatment | Double Anti-Reflective Coating |
| Watch Case Types | Date |
| Buttons | 1 Crown |
| Screw Crown | Yes |
| Water Resistance (in ATM) | 20 |
| Frequency | 28,800 A/h (4 Hz) |
| Movements | Automatic (rotor) |
| Movement Type | Swiss Movement |
| Movement Brand | ETA |
| Calibers (Movements) | ETA 2893-2 |
| Calendar and Time | Dates GMT (time zone) Hours Minutes Seconds |
| Timekeeping and Measurement | Hacking seconds device |
| Power Reserve (Maximum Duration) | 42 hours |
| Display Type | Analog (hands) |
| Display Specifications | Arabic Numerals Luminescent hands and indexes |
| Techniques and Mechanics | Ar Dehumidification Technology Rotating bezel TEGIMENT Treatment |
| Bracelet Material | Bovine leather |
| Strap Color | Black |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | 22,00 |
| Activities | Aviation Yachting / Sailing |
Series 857: pilot watches with protection against magnetic fields.
The Watch
Topped by a flat sapphire crystal with double anti-reflective coatings, the round case is crafted in stainless steel. It measures 43mm in diameter, 12mm thick, and weighs 90 grams without the strap. The black dial features luminescent hands, Arabic numerals, and white indices, along with a date aperture at 4 o'clock. A 4th hand displays a second time zone in 24h mode. The caseback is screwed down and nickel-free. The crown at 3 o'clock is also screwed down.
The case features a black bidirectional rotating bezel with a visual countdown function. To prevent accidental rotation, the bezel is secured to the case in a way that ensures it cannot be lost.
This watch features a black leather strap with a pin buckle. It is water-resistant to 20 atmospheres (200m), making it suitable for swimming and scuba diving.
Specific Technical Specifications
The case and bezel have undergone TEGIMENT anti-impact treatment. This surface-hardening technology provides highly effective protection for stainless steel against scratches.
This watch also incorporates Sinn's patented Ar dehumidification technology. This technology slows down the aging process of the watch's internal components, extending the movement's service life. It also prevents condensation from forming on the crystal during sudden temperature changes.
It also provides protection against magnetic fields up to 80,000 A/m, thanks to a dial and double caseback made of soft magnetic material. This construction prevents the watch from being disrupted or stopped when exposed to magnetic fields produced by, for example, electric motors or loudspeakers.
The Movement
This watch houses a Swiss ETA 2893-2 automatic movement. This 21-jewel caliber displays hours, minutes, seconds, and the date in an aperture - and adds a second time zone display in 24h mode. It features a hacking seconds mechanism for precise time-setting. The movement runs at 28,800 vph with a 42-hour power reserve.
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Watch 857 UTC Flieger Leather
(Ref. 19862)