Description: 1. No need to replace the battery, and no need to recharge frequently. It comes with 1 -USB so it can charge the front and back at the same time. 2. There are 3 modes: fast flashing - slow flashing - always on-off. 3. Front and rear light and reflective 360 reflection and visibility to help you stand out in the dark. 4. easy to put on and , just slide it over your head arm. 5. The battery is IP44 waterproof, so you 't have to worry about damaging the battery even if you use it in the rain. Color: fluorescent green Material: Nylon size: 80 x 5cm Package Contents: 1 x LED Reflective Belt Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.