Features: 5 Different Output Modes:. The smart bike tail light has Different output modes to choose from, which can satisfy all types of riding conditions and rules. Riding Safety Brake Sensing Tail Light: Smart brake sensing bike tail light, automatic start and stop. The bike tail light will automatically lights up when braking or vibrating, with a high-sensitive sensing system and automatically comes on at maximum brightness to alert others Motorcycle Tail Light It is made of plastic , which is Sturdy, toughness and Sturdy, owning long using life span. Unique: Taillight unique design, very bright, the best choice for motorcycle . ENHANCED VISIBILITY: Improves the overall visibility of your motorcycle on the road, making it more visibles in the traffic flows and reducing the likelihood of being overlooked. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description SR-1 Smart Brake Taillight / SR2 Aluminum Alloy Taillight / SR3 Dual-Color Taillight Material: CNC-Aluminum Alloy LEDs: COBs High-Brightness Modes: Five-Mode / Six-Mode / Seven-Mode Battery: 400mAh / 350mAh Li-Ion / 300mAh Li-Ion Waterproof: IP65 Charging: Type C / Type C / USB Battery Life: 13-42 hours / 6-30 hours / 7-24 hours Package List: 1x Taillight