Instrument Watches - Model 857

The Pilot Watch with Magnetic Field Protection and Captive Safety Bezel
 
 
 Based on the 856 series, and designed as a functional instrument watch in the tradition of our cockpit navigation clocks, this pilot's watch also features a pilot's bezel which permits its wearer to measure or check set time intervals. This is a decisive criterion particularly in aviation — reason enough for us to give this important function a superior design.
The stainless steel pilot's bezel with minute ratcheting can be rotated on both sides and features a special mechanical system developed by SINN to protect against loss. Like the case material, the base of the bezel is tempered with TEGIMENT Technology. The labelling is silver on an inset, black anodised aluminium ring to ensure optimal scale readability. A luminous triangle serves as the 0 / 60 minute mark. The pilot’s bezel can be turned in both directions and clicks firmly and audibly into place at minute  intervals
 
- Case made of stainless steel, bead-blasted
- Case made with TEGIMENT Technology and therefore especially scratch-resistant
- Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
- Magnetic Field Protection up to 80,000 A/m
- Nickel - free case back
- Captive pilot's bezel with minute ratcheting
- Sapphire crystal glass
- Pressure resistant to 20 bar (= 200 m water depth)
- Low pressure resistant

Technical Data
Model 857

Mechanical Movement:
- ETA 2892-A2
- Self-winding mechanism
- 21 bearing jewels
- 28.800 semi-oscillations per hour
- Seconds stop function
- Shock resistant as per DIN 8308
- Anti-magnetic as per DIN 8309
 
Case:
- Case made of stainless steel, bead-blasted
- Sapphire crystal glass in front, anti-reflective on both sides
- Case back screw-fastened, nickel-free
- Crown screwable
- Water resistant as per DIN 8310
- Pressure resistant to 20 bar (= 200 m water depth)
- Low pressure resistant

Functions:
- Hours, minutes, seconds
- Date display
- Pilot’s bezel with minute ratcheting and luminous key mark

SINN Technologies:
- TEGIMENT Technology, therefore especially scratch-resistant
- Captive bezel
- Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
- Magnetic Field Protection up to 80,000 A/m

Dial and Hands:
- Matte black dial
- Numbers and indices coated with luminescent colour
- Hour and minute hand coated with luminescent colour

Measurements:
- Case diameter 43 mm
- Lug width: 22 mm

Guarantee:
- 3 years

Strap:
- Calf Strap
- Rubber
- Bracelet