Ravemen TR500 Smart LED Tail Light Description: The Ravemen TR500 Smart LED Tail Light strives to lend riders complete tail light safety with 500 lumens of light and an improved eye-catching warning flashing mode. Ravemen TR500 rear lights feature an intelligent brake sensor for urban riding and an auto on-off function for convenient operation. 5 lighting modes, including 3 constant and 2 flashing modes, for various riding scenarios. A USB-C charging port makes for easier charging solutions and is compatible with round and aero seatposts. Features: Brake light sensor enabled tail light 3 LED lights project prominent visibility during day and nighttime riding Built-in motion sensor detects braking forces, displaying a 200 lumen output indicating stops Auto on/off mode shuts down light after 2 minutes of inactivity and resumes when motion is detected Side visibility enhanced by internal stripes reflecting light USB-C charging port ensures universal charging solutions Run Time: 4.5 Hours (High, 100 Lumens) 7.5 Hours (Mid, 50 Lumens) 17 Hours (Low, 20 Lumens) 18 Hours (Warning Flashing, 500 Lumens) 21 Hours (Rapid Flashing, 100 Lumens) 10 Hours (Slow Flashing, 100 Lumens) Specifications: Brightness: 500 Lumens (Rear) Battery Type: Rechargeable (USB) Run Time: Up To 21 Hours (Rear) Beam Color: Red Color: Black Weight: 77g (Rear) Includes: (1) Ravemen TR500 Tail Light (1) USB Cable (1) Seatpost Pad (1) Short rubber strap (1) Long rubber strap