Pilot Watch - Model 657 S

The pilot watch with captive rotating bezel

This pilot watch ensures that you'll never lose your bearings, whether in the wild blue yonder or on the ground. Its captive rotating bezel developed by Sinn – is securely fastened to the case and can be rotated on both sides. This watch is ideal for measuring and monitoring time intervals.

- Case made of matte black chrome-plated stainless steel
- Magnetic field protection up to 80,000 A/m
- Captive rotating pilot's bezel with minute ratcheting
- Sapphire crystal glass with anti-reflective coating on both sides
- Nickel-free case back
- Pressure-resistant to 20 bar (= 200 m water depth)
- Resistant to low pressure at high altitudes

Technical Data
Model 657 S

Movement:
- ETA 2824-2
- Mechanical lever movement with self-winding mechanism
- 25 jewels and 28.800 vibrations per hour
- Antimagnetic according to DIN 8309
- Shock resistant according to DIN 8308
- Hand setting with second hand stop
- Quick adjustment of date

Display/Functions:
- Inactive luminous hands, indices and numbers
- Hours, minutes, seconds
- Date in dial aperture

Case:
- Stainless steel, sand-blasted
- Screwed-on stainless steel case back
- Screw-down crown with flank protection
- Scratch resistant sapphire crystal, antireflective on both sides
- Magnetic field protected up to 80.000 A/m = 100 mT
- Water resistant according to DIN 8310
- Pressure resistant up to 10 bar = approx 100 m water depth

Measurements:
- Case diameter 41 mm
- Lug width 20 mm

Guarantee:
- 2 years

Strap:
- Leather or bracelet