Movement Accuracy:-35/+45 seconds per day Calibre:4R34 Movement Type:Automatic with Manual Winding Power Reserve:41 Hours Jewels:24 Exterior Dial Colour: Black LumiBrite:Lumibrite on hands and indexes Case Material:Stainless Steel Strap/Bracelet: Brown Leather Case Diameter:42.5mm Case Thickness:13.6mm Case Length:46.0mm Lug Width:22.0mm Other Specifications Water Resistance:10 bar Weight:159.0g Crystal Type:Hardlex Other Specifications:Screw case back, See-through case back, Rotating bezel, Three-fold clasp with secure lock Watch Function:24-hour hand (dual time display function), Stop seconds hand function Magnetic Resistance:4,800 A/m