Turn Signal Remote Control: Easy to install. Lightweight and durable bike tail light can be installed on all bikes, children's bikes, adult bikes. It can also be used as a helmet light, backpack light, warning light, etc. Set Your Own Lighting Mode: 5 lighting mode options: turn right, turn left, steady red, red and blue flashing, full flash. You can switch modes according to your needs and different occasions to get the best lighting experience and protect yourself. USB Rechargeable & CR2032: The turn signal is USB rechargeable, and the red light turns green when fully charged. It can be used for 4-6 hours after charging for 1-2 hours. The remote control can easily replace the CR2032 battery. Waterproof Bike Taillight: The taillight is made of waterproof material to ensure safe use in rainy days. Try to get yours! WASAGA Guarantee: Any problem can contact us, we will try to solve it within 24 hours. We promise a money back guarantee.