Power Reserve: Approximately 6 months when fully charged.Case Size: Compact and versatile 39mm diameter with a thickness of 13.3mm.Crystal Material: Curved, scratch-resistant sapphire crystal with an anti-reflective coating on the inner surface.Bezel: Fixed black tachymeter bezel used to measure speed over a fixed distance.Water Resistance: Up to 10 bar (100 meters), making it suitable for swimming and everyday splashes