Features: 1. Small size portable and light: the unique cylindrical shape is unique. 2. Upgraded lamp beads bright and not dazzling: waterproof design you can ride with confidence in raining days and travel without worry. 3. USB direct charging: built-in battery USB fast charging various ways. 4. Easy to install and operate: The bicycle headlight and taillight set comes with straps you just need to find the right angle to fix it. 5. Bright bike lights soft light effect give you a better night riding experience. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Lamp beads: high-brightness lamp beads Waterproof: life waterproof Material: ABS+Silicone Power supply: USB direct charge Capacity: 220mAh Battery life: about 6 hours includes: 1 x Bicycle Tail Light "