âMaterial: Case: Back cover/Band = Stainless Steel Windshield = Curved Hardlex -Dimensions (approx.): 47 x 39.8 x Thickness 12.8 mm -Wrist circumference (approx.): 18 cm âMovement: Quartz (±15 seconds average monthly error) Enhanced daily waterproof (10 ATM waterproof) âMade in Japan