Case: 316L stainless steel +ceramic bezel Strap: diving rubber Strap Back cover: stainless steel Movement: Japan NH35 automatic movement Diameter: 45mm Thickness: 15mm Lens: flat sapphire glass Dial: sunray dial with Swiss Super C1 luminous applied index hour marker watch hand: Swiss luminous hand Clasp: solid stainless steel pin buckle waterproof: 500M