Sapphire crystal. Miyota 8215 automatic movement. 316L stainless steel. Ceramic bezel. Water resistant to 100 meters.

Frame:
120-click unidirectional swivel. Graduated in 60 minutes.

Specifications:
- Diameter: 43 mm
- Height: 13.01 mm
- Material: 316L stainless steel
- Finish: polished steel
- Crown: screw-down
- Crystal: hard-coated sapphire crystal, scratch-resistant and anti-reflective.
- Additional indication: 60-minute scale
- Case back: Screw-down
- Water resistance: Up to 10 bar [dynamic]
-
Closure:
- Folding clasp in stainless steel

Dial:
The PD-1639 offers excellent readability in all circumstances, especially in the dark, as its hands are coated with a long-lasting luminescent material.
