857

Based on the 856 series, and designed as a functional instrument watch in the tradition of our cockpit navigation clocks, this pilot 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.

SW300-1
Self-winding mechanism
25 bearing jewels
28.800 semi-oscillations per hour
Seconds stop function
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
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant to 20 bar
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
Dimensions and Weight
Case diameter: 43 mm
Band lug width: 22 mm
Case thickness: 12 mm
Weight without strap: 90 gr
Dial and Hands
Matte black dial
Numbers and indices coated with luminescent colour
Hour and minute hand coated with luminescent colour

Bracelet: BM7570102S Stainless steel tegimented, bead blasted, safety folding clasp and diving extension