657

• Case made of stainless steel, bead-blasted
• Magnetic Field Protection up to 80,000 A / m
• Captive pilot's bezel with minute ratcheting
• Sapphire crystal glass
• Nickel-free case back
• Pressure-resistant to 20 bar
• Low pressure resistant

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Based on the 656 model range, 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.

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.

• Mechanical Movement
• • ETA 2824-2
  • Self-winding mechanism
  • 25 bearing jewels
  • 28,800 semi-oscillations per hour
  • Seconds stop function
  • Shock resistant as per DIN ISO 1413
  • 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 up to 20 bar
  • Low pressure resistant

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

• SINN Technologies
• • Captive bezel
  • Magnetic Field Protection up to 80,000 A/m

• Dimensions and Weight
• • Case diameter: 41 mm
  • Band lug width: 20 mm
  • Case thickness: 12 mm
  • Weight without strap: 77 gramme

• Dial and Hands
• • Glossy black dial
  • Numbers and indices coated with luminescent colour
  • Hour and minute hand coated with luminescent colour

• Warranty
• • Warranty period 2 years
    Our warranty conditions can be found in §12 of our General Terms and Conditions