High-Visibility LED Light for Night Riding: Equipped with bright LED lights and four lighting modes (fast flash, slow flash, steady, and breathing), this bike tail light offers 260-degree visibility, ensuring safety during night riding and cyclingSmart Motion & Brake Sensors for Enhanced Safety: This rear bike light automatically shuts off after 30 seconds of inactivity and reactivates with movement. The brake light function flashes at full brightness for 2 seconds, alerting other ridersEasy Operation & Flexible Installation: Simple to operate with a long press to turn on/off and a short press to switch modes. Choose between saddle or seat-post mounting for a secure fit, making it an perfect bike light accessoryUSB Rechargeable Bike Lights with Long Battery Life: This rechargeable bike tail light uses a 300mAh battery that charges via USB in 1.5-2 hours, providing long-lasting power for night rides and cyclingDurable Build & All-Weather Ready: Designed with IPX4 waterproof rate, this bike tail light can withstand light rain and splashes, making it the perfect bicycle accessory for all cycling conditions