Movement Calibre: 4R35 Movement Type: Automatic & Manual Winding Power Reserve: 41 Hours Watch Case Case Material: Stainless steel (hard coating) Case Thickness: 13.4mm Case Diameter: 43.8mm Case Length: 48.4mm Lug Width: 22.0mm Exterior Dial Colour: Grey LumiBrite: Lumibrite on hands, indexes and bezel Clasp: Pin buckle Strap/Bracelet: Silicone Other Specifications Water Resistance: 20 bar Crystal Type: Sapphire crystal with magnifier