Seiko Cal. V157, ±15 Seconds per Month, 10 Months Power Reserve (when fully charged)Textured Silicone Strap, Green Dial Unidirectional Rotating Three Dimensional Aluminium Bezel, Case Material Stainless steel(hard coating) and plastic. Hardlex crystal. Case thickness: 12.6 mm, Case diameter: 46.7 mm, Case Length: 45.8 mm. Water resistance upto 200 meters.