Xcellent Global Bicycle Tail Light Mountain Bike Rear Helmet Head Safety Outdoor Warning Light USB Rechargeable 120 LumensRed + Blue LD103 ULTRA-BRIGHT AND DOUBLE COLOR LIGHT TO DRAW ATTENTION: The high brightness COB LED produces extraordinarily 120 Lumens red and blue light which is eye-catching for 240 degree visible.Equip your bike with this tail light to enhance maximum visibility on the road DIVERSE MODE: This bicycle tail light has 6 modes: strong red light,standard red light,blue light,red light flashing,SOS red light flashing and red & blue alternately flashing. With simple one button operation, you can easily choose the mode you like USB RECHARGEABLE: Charges from your computer or any device with a USB port. High-capacity rechargeable lithium battery(3.7V 600mAh) takes only 2 hours for a single full charge and ensures a long period of cycling journey. WATERPROOF,DROP AND COMPRESSION RESISTANT: With ultrasonic welding technology, water resistant of the light is rated up to IPX6 to ensure normal use under stormy weather.And the light has also past car compression test which shows its high drop and compresssion resistance. KEEP YOUR MOUNTING OPTIONS OPEN: It can be easily strapped on bike handlebar,seat post,your helmet,backpack and ect in seconds.The quick release hanlebar mount fits for 10-34mm diameter. Be creative and strap it anywhere