The working time of the bike LED turn signals light can last approximately 4 hours of continuous flashing in a fully charged state. You only need a few seconds to install and remove the lights, after installation, whether on steep or bumpy roads, the bicycle turn signals can be firmly fixed on the frame, will not shake or fall. If you have any questions, please feel free to contact us. Vater T3 Tipani, Druset ≈ Cybal allets, Pair Buy Goldfox Bike Tail Light USB Rechargeable, Bike Turn Signals Front... Aazon.co : GOLDFOX Bike Tail Light, USB Rechargeable Bike Turn 1 Waterproof 2 Installation 3 Product display Highly recommended bicycle rear lights for office workers, and students. Mini Bike Frame Bike Tail Light USB With s Warning Lamp Wireless Remote Control Rear Rechargeable Cycling Mountain Turn Signal Bike Turn Signal with a USB charging port can be quickly charged from a power bank,laptop or any device with a USB port, so you don’t need to worry about running out of battery. Easy to Install and Stable:This bicycle turn signals front and rear can be mounted on different types of bikes and scooters and feel free to install in any position. IPX65 waterproof,suitable for all kinds of bad weather (Do not soak in water for a long time Wireless Remote Control with 120 DB Bicycle Horn Function Waterproof & USB Rechargeable: The IP65 waterproof performance makes this bike turn signals more convenient to travel on rainy days.