Crystal Pure Red Rear Light. Featuring transparent light body and special internal reflecting patterns, TR30M gives out 360 degree beam with max 30 LED lumens, providing much better rear and side visibility to increase rider\'s safety. It is lightweight, easy to use and versatile with quick release clamp mount. Providing 360-degree beam angle,Transparent pure red light body,Special internal reflecting patterns,Convert dual LEDs point lights into panel lighting alike, enhancing the rear and side visibility ,and increasing rider\'s safety,Brighter and larger side visibility,Mounting the light in a nearly horizontal position, the light body is more obvious than the ,traditional vertical way,Adjust the angle for daily riding with max visibility or for group riding without dazzling following riders,. Key Features: Dual Highly efficient LEDs with max 30 LED lumens, Transparent light body with 360-degree beam angle, Special internal reflecting patterns, enhancing the rear and side visibility and increasing rider\'s safety, Mounting angle adjustable for daily riding with max visibility or for group riding without dazzling following riders, Quick release design, compatible with round and aero seatposts, Micro USB charging port, compatible with most phone chargers, Built-in battery indicator and charging indicator, Intelligent memory circuit remembers the last used brightness level and mode when turned on again,.Specifications: LED: Dual highly efficient LEDs,Battery: 200mAh/3.7V rechargeable Li-polymer battery,Dimensions (light unit): 25mm (L)*21mm (W)*62mm (H),Weight (light unit): 22g,Mount size: compatible with f 24-36mm seatpost,Design and specifications are subject to change without notice.