Features Movement Miyota Japanese quartz 3 hand. Case 40mm, 100 meter / 10 ATM, custom stainless steel core encased in custom injection molded polycarbonate, fixed polycarbonate bezel, hardened mineral crystal, triple gasket molded polycarbonate crown, screw down stainless steel caseback encased in custom injection molded polycarbonate, and stainless steel spring pin lugs.Band 20 mm custom injection molded silicone band with patented locking looper and polycarbonate buckle.