... ion silicone watchFeatures: 1. Made by grade of silicone rubber and it mixed MAGMA-Q & Tourmaline. 2. This ion silicone watch ... body tension, promote your sleep, improve concetration, enhance your energys and your imune function. 3. Light weigh(10 g), variety colors ... size, could supply sizes for 14CM, 15CM, 16CM, 17CM, 18CM and 19CM(circumference). 7. Colors: Any colors are avaialble to match ...