Caliber Number: 2R05 Movement Type: Automatic with manual winding Power reserve: Approximately 40 hours Jewels: 21 Stop second hand function Case Material: Stainless steel Case Size: Thickness: 10.9mm Diameter: 30.3mm Lug-to-lug: 37.0mm Crystal: Box-shaped Hardlex Band Material: Calfskin Clasp: Three-fold clasp with push button release Distance between lugs: 14 Water Resistance: 5 bar LIMITED EDITION on the case back Serial number engraved on the case back Interchangeable band with quick release spring bars Screw case back In an actual product, the case back direction might be different from the photograph.