157 St Ty
The pilot's chronograph.
Special characteristics- Case made of stainless steel, bead-blasted
- Tachymeter and pulsometer scale
- Sapphire crystal glass
- 24-hour display
- Pressure-resistant to 20 bar
- Low pressure resistant
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- Mechanical Movement
- Lemania 5100
- Self-winding mechanism
- 17 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 the interior
- Case back screw-fastened
- 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, subsidiary seconds
- Date display
- Day of the week display
- Chronograph
- 24-hour display
- Tachymeter / Pulsometer scale
- Dimensions and Weight
- Case diameter: 40 mm
- Band lug width: 20 mm
- Case thickness: 15 mm
- Weight without strap: 86 gramme
- Dial and Hands
- Matte black dial
- Indices coated with luminescent paint tritium
- Hour and minute coated with luminescent paint tritium
- 24-hour-hand with with luminescent paint tritium
- Chronograph function with daylight luminous paint
