OS Slide Rules Slide Rule Chronograph 2020

The rotating bezel to perform general calculations and navigational computations.

Reference

8557CALTH-a1

Case Diameter

47.5 mm

Dial color

black

Movement (Type)

automatic

Movement (Caliber)

Dubois-Depraz 2020

Case Material

stainless steel

Case Surface

matt

Water Resistance

3 ATM

Glass

mineral crystal

Case Back

glass back

Band

leather strap

Origin

Swiss Made