Driving system Automatic Caliber Number 8210 Case material Stainless steel Case back See-through Band type Bracelet Band material Stainless steel Band color Silver tone Band width 20 mm Clasp Fold over with push button Dial color Yellow Glass material Sapphire crystal Hands Silver tone hour, minute, second hand Dial markers Luminous batons indexes with double batons indexes at 6 and 12 o’clock position Second markers Minutes markers around the outer rim Lumi Brite Hands and indexes Bezel Fixed silver tone stainless steel Crown Screw down at 4 o’clock position Calendar Date display at 3 o’clock position with magnifier Vibration 21,600 vibrations per hour (6 beats per second) Drive duration Power reserve 42 hours Water resistance 5 bar water resistance (50 meters / 165 feet) Size Diameter 40 mm x Thickness 11.7 mm Lug to lug 45 mm Weight 138 g