Caliber no.：9R31 Instructions
Power reserve：Approx. 72 hours(3 days)
Accuracy：±15 seconds per month (±1 second per day)
Watch case
Watch case
Exterior：Stainless steel
Case back：See-through & Screw case back
Glass Coating：Anti-reflective coating on inner surface
Case size：Diameter 38.5mm Lug-to-lug 43.7mm Thickness 10.2mm
