Exterior Case material: stainless steel Glass material: double-curved sapphire crystal Glass coating: anti-reflective coating on inner surface Lumi Brite : Lumibrite on hands and markers Case dimensions: diameter 44 mm × thickness 14.7 mm The perimeter of the band: 191 mm Clasp type: three-fold clasp with push-button release Movement Caliber No. : 9R66 Instructions Movement type: spring drive Power reserve: approx. 72 hours (3 days) Accuracy: ±1 second per day / ±15 seconds per month (average) Functions Water resistance: 20 bar Magnetic resistance: equipped Weight: 177.0 g Other details/Features: 24-hour hand (dual time display function) 30 jewels ・Calendar-linked time difference adjustment function Case back with lion emblem Date display Power reserve indicator ・Rotating bezel (24-hour display) Screw-down case back Screw-down crown Second hand stop function