The Blue Solar Diver Wristwatch: Deep blue solar patterned dial. 40mm diameter, 47mm lug to lug, 20mm lug width. Case features sapphire glass, screw down crown, uni-directional ratcheting timer bezel, 10ATM. Genuine Seiko NH35 Movement. 41 hour power reserve, automatic and hand wind. Black FKM rubber strap with stainless steel buckle.