2010 ion silicone rubber watch watch case changeable various color available 2010 ion silicone rubber watchFeatures:1) Made of 100% silicone rubber, harmless to body2) High quality3) Different colors and sizes available4) With printing some designs on it 5) Suitable for all people6)Japan Movement, 7)3ATM Waterproof 8)Eco-friendly 9)Any ODM/ODM New Design Is Available