| Reference Ocarat | #15789 |
| Reference | 103.031 |
| Brand | Sinn |
| Product Type | Watch |
| Gender | Men |
| Color | Black |
| Material | Steel |
| Material Quality | 316L stainless steel |
| Finish | Polished / Shiny |
| Warranty | 2 Years |
| Thickness (in mm) | 15,50 |
| Diameter (in mm) | 41,00 |
| Manufacturing | Germany |
| Labels and Certificates | Authorized Retailer |
| Case Shape | Round |
| Case Weight (in g) | 74,00 |
| Bezel | Bidirectional Visual Countdown |
| Watch Case Back | Screwed caseback |
| Crystal Shape | Domed |
| Glass Quality | Hesalite Crystal |
| Watch Case Types | Date Day |
| Buttons | 1 Crown 2 Pushers |
| Water Resistance (in ATM) | 20 |
| Frequency | 28,800 A/h (4 Hz) |
| Movements | Automatic (rotor) |
| Movement Type | Swiss Movement |
| Movement Brand | Concepto |
| Calibers (Movements) | Concepto C99001 |
| Calendar and Time | Dates Days Hours Minutes Seconds |
| Chronograph Function | Yes |
| Counters and Durations | 12h 30 min Small seconds |
| Timekeeping and Measurement | Hacking seconds device |
| Power Reserve (Maximum Duration) | 48 hours |
| Display Type | Analog (hands) |
| Display Specifications | Arabic Numerals Luminescent hands and numerals |
| Number of Counters (Additional) | 3 |
| Techniques and Mechanics | Rotating bezel |
| Bracelet Material | Bovine leather |
| Strap Color | Black |
| Watch Clasp | Tang Buckle |
| Lug Width (in mm) | 20,00 |
| Activities | Aviation Swimming / Diving Yachting / Sailing |
No-compromise performance, even in the most demanding conditions. This pilot chronograph reflects the design of cockpit instruments, staying true to the Sinn tradition.
The WatchTopped with a domed acrylic hesalite crystal, the polished round stainless steel case measures 41mm in diameter, 15.5mm thick, and weighs 74 grams. The black dial features luminescent white Arabic numerals and hands, two windows for the date and day at 3 o'clock, and three counters. The small seconds counter is positioned at 9 o'clock, while the chronograph's 30-minute and 12-hour counters are placed at 12 o'clock and 6 o'clock respectively. The case is fitted with a bidirectional bezel offering a visual countdown function. The screw-down crown and two chronograph pushers are located on the right side of the case.
Fitted with a black leather strap and a stainless steel pin buckle, this watch is water-resistant to 20 atmospheres (200m) - suitable for swimming and scuba diving.
The Movement This watch houses a Swiss Concepto C99001 automatic self-winding movement. This 25-jewel caliber displays hours, minutes, and a dedicated small seconds counter, along with the date and day. It features a stop-seconds mechanism for precise time-setting to the second, and a chronograph function with 30-minute and 12-hour counters. The movement runs at 28,800 vph with a 48-hour power reserve.




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Sinn Pilot Chronograph 103 St Watch
(Ref. 15789)