1. High density nylon ribbon + ultra bright PU light optical fiber. 2. Size: 26 * 4 cm. 3. The light arm belt itself bring 1 grain of original button batteries. 4. Light sustainable 50 hours. 5. Suitable for dark or night activities, outdoor sports, through the ultra bright LED fiber optic light, the warning role, design fashion no matter day or night is fit for use. 6. Even if put into the water can also bright.
