Bike Tail Light, IHUIXINHE USB Rechargeable Taillight, 6 Light Modes Rear Bike Lighting Ultra Bright Tail Bicycle Light - 30 chips high brightness red led. To keep you safe. USB Rechargeable Taillight- Rechargeable lithhium polymer battery. Fully charge only needs 2 hours. Make it more convient and environment friendly. Easy to Install - Use the rubber band to fix the tail bike light in anywhere you want to install. Such as handlebar, the back of a helmet, the seat post and anyother place you can install. 6 modes - Standard (20 lumen, runtime up to 6 hours 20 mins), High Beam (50 lumen, runtime up to 2 hours 45 mins ), Over Drive (100 lumen, runtime up to 1 hour 40 mins), 50% Flashing (runtime up to 5 hours 10 mins), 100% Flashing (runtime up to 3 hours), Strobe (runtime up to 2 hours 50 mins). 100% Satisfaction Guarantee - If you are not satisfied with the bike tail light for any reason within 30 days of purchase, let us know and you get your money back.