Case Material : Solid 316L stainless steel. Strap Material : stainless steel. Case Size :Diameter 42 mm. Case Thickness :12.5 mm. Glass: Sapphire Crystal glass. Fit Dial Diameter : 31.2mm-32.4mm Dial. Fit Watch Movement: VK63 VK64 movement. Waterproof depth: 100M waterproof.