ExteriorCase Material :Stainless steelGlass Material :Dual-curved sapphireGlass Coating :Anti-reflective coating on inner surfaceCase size :Diameter 41mm × Thickness 12.5mmThe perimeter of Band :195mmClasp type :Three-fold clasp with push button releaseMovementCaliber no. :9R65    InstructionsMovement Type :Spring DrivePower reserve :Approx. 72 hours(3 days)Accuracy :±1 second per day / ±15 seconds per month (average)FunctionsWater resistance :10 barMagnetic resistance :EquippedWeight :150.0 gOther details / Features :・30 jewels・Case back with lion emblem・Date display・Power reserve display・Screw case back・Screw-down crown・See-through case back・Stop seconds hand function