With high visibility and superior side illumination, the TR30 ensures you're seen from all angles, day or night. It features smart brake detection, auto on-off functionality, and a clear battery indicator, giving you peace of mind throughout your ride. Lightweight and easy to mount, the TR30 offers long battery life and IPX6-rated water resistance, making it the ideal choice for all-weather cycling. High visibility The 30-lumen tail light delivers a 270 wide-angle beam that ensures you are visible from up to 800 meters away. With its eye-catching output, the RAVEMEN TR30 enhances your safety on the road. Smart battery indicator A quick button click tells you all you need to know: Green (>40%), Red (5-40%), and Blinking Red (Low battery). Never get caught off guard on your ride. Superior side visibility The translucent housing design maximizes side visibility, ensuring that you're easily seen from multiple angles for added safety. Brake detection Automatically highlights the rear light for 2 seconds when braking to alert drivers behind you and reducing the risk of rear-end collisions. Auto on-off The tail light auto-off after 2 minutes of inactivity and auto-on upon detecting movement. Easy to mount Equipped with a tool-free, flexible rubber mounting O ring, the TR30 is compatible with round seat posts. Some aero seatposts in similar sizes will also fit. Hidden USB-C charging port The hidden USB-C connector makes charging safe and convenient. IPX6 water-resistance Built to withstand heavy rain and tough conditions, the TR30 ensures reliable performance in all-weather riding. Product Features Eye-catching flashing with max 30 LED lumens, providing great visibility for riding Built-in motion sensor for brake detection and auto on-off function when activated Special lens design to increase your side visibility when crossing road USB-C charging port for convenient use IPX6 water-resistance rating, ensuring safety and performance even in rainy conditions Compatible with round seat posts; Some aero seatposts in similar sizes will also fit 2 years warranty and limited lifetime warranty Tech Specifications LED: 8 high-efficiency red LEDs Battery: 200mAh/3.7V rechargeable polymer battery Dimensions (Headlight): 29.7mm (L)*21.2mm (W)*63.2mm (H) Weight (Rearlight): 22.8g Materials: The light is made by made by durable plastic Design and specifications are subject to change without notice