Bezel:
Unidirectional 120-click bezel. Graduated in 60 minutes.

Specifications:
- Diameter: 43 mm.
- Height: 13.01 mm.
- Material: 316L Stainless Steel.
- Crown: Screwed.
- Glass: Hard-coated, scratch-resistant sapphire crystal with anti-reflective treatment.
- Additional display: 60-minute scale.
- Case base: Screwed.
- Waterproof: Up to 330ft.
- Power Reserve: 42 hours
Dial:
The PD-1639 offers excellent readability under any circumstances, especially in the dark. Its hands are coated with a long-lasting luminescent material.

Strap Compatibility
This model accepts all standard 20mm straps.
Bracelet Sizing
We recommend seeking professional assistance for steel bracelet link removal for the perfect fit.
Water Resistance
Always ensure the crown is screwed down before any contact with water to maintain the seal.
Please check the specific water-resistance rating of this model before swimming or showering. The guide below is for reference only.













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