Specification Type: Bicycle Tail Lights Weight: 110g Material: Plastic Size: 7 x 2 x 1.7 cm Charging method: By USB Charging time: 2 hours About this item Super Bright Tail Light - These security lights will keep you safe. 240 degree wide angle visual design provides super bright light and increased visibility. Keeping you visible not only at night but also in the day IPX4 Waterproof - The rear lights are protected by the specially designed high density waterproof plastic lamp body. You can use it in any weather, extremely durable USB Rechargeable - Powered via USB cable. Compatible with computers, power banks, and other devices with USB output. It will save you lots of money on batteries 4 Lighting Modes - One key to select different lighting modes among Steady Light, Slow Flash, Fast Flash, Repeating Flash. The slow flash is ideal for foggy mornings and the fast flash is suitable for the night Easy to Use - Clip on your belt, reflective vest, backpack, dog collars, harness or anywhere where on your clothes. Install on your bike, helmet, scooter, stroller, wheelchair or anywhere you can imagine