<4 Light Mode Options and Discharge Time of Full-charging 9.5hr (full brightness) ,16hrs (half brightness), 10hrs (slow flashing), 11hrs (fast flashing) How to Charge 1. Attach the micro USB cable to the Bike lights micro USB input port. 2. Insert the other end of the cable into either an AC adapter(not included ) connected to a wall socket or an active computer USB port. 3. The LED indicator of tail light has a red light when charging and the LED indicator will turn to be green when finished charging. Package Contents 2 X Taillight (red light) 2 X USB cables 2 X Silicone mounting Strap for Taillight 1 X Instruction Manual
Features:

USB Rechargeable Light: Built-in 330 mAh rechargeable lithium battery, can be charged from any USB port

Super Bright with four Modes :full brightness,half brightness,fast flashing, slow flashing, It has four light modes which you can easily switch between

Get Riding Safety: The tail light emits an eye-catching wide-angle beam that can be seen from blocks away, need not worry about being knocked over by others

Easy to Install: With a convenient one-touch dismount button, you just need to slide the light on and off the mount;The silicone mount strap for Taillight is designed with four openings that tightly fit around most size handlebars and seat posts

IPX4 Water Resistant: Protected against splashing water from any angle.Whether in heavy rain or fog, its waterproof, impact resistance and durability can withstand;Whether you're running, cycling or hiking, the safety lights will keep you safe and secure