... steel case 100% silicone strap, soft, comfortable, eco-friendly and non toxic to body; Waterproof: 3ATM/5ATM waterproof; Function: Hour/Minute ... : Stainless steel/Silicone(Wacker Germany, KCC and TOSHIBA Japan)Feature: Smooth touch, Non-Stick, Elastic, Eco-Friendly, Glow in dark, UV sensitiveApplicable ...