Features: TAIL LIGHT: This cutting-edge LED Bike Tail Light redefines maximum visibility and safety on the road, ensuring you ride with confidences, day or night,but also has strong practicality, precise design and practicality, making it the perfect companion for your cycling-adventure. USB Rechargeable: Say goodbye to disposable batteries! Bike Tail Light is rechargeable via USB, making it convenient Mildly waterproof: LED Bike Tail Light can Water resistant for daily use, it can resist splashing water. Compact and portable: Small in size and light in weight, it does not add burden to riding. Easy to install: Install using a metal under seats or rubber band seats post mount. Suitable for road, mountain, cruisers, scooter. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Battery capacity: 300mAh Lamp type: COBs Charging time: about 40 minutes Modes: 4 Size: As picture show Package List: 1x Bike Tail Light