Powerful Bike Light -- This bike spotlight incorporates four high-quality Cool white road and warm yellow near light, the USB bike light has 13 light modes and the rear light has 3 light modes. Everything was born for your cycling safety. 6400 mAh battery and power bank -- Made two high quality NCR 18650 lithium batteries inside, USB rechargeable charging cycle up to 6 times longer than batteries normal, driving for longer with a large capacity 6400 mAh battery. Thanks to the extra power bank function, you can quickly charge the phone through the USB 2.0/ 3.6V port, no need to worry about any emergency situation that the phone battery runs out. Smart LED Display -- The smart LED display shows the corresponding battery level with an accuracy of 1%, reminding you of the battery situation and making a better plan for subsequent driving. Easy to install -- Designed with quick mounting system, easy to install in 5 seconds without tools. It is easy to remove and can be taken when going out to avoid theft. The aluminum alloy bracket fits all bicycle models. High quality material -- Our LED bicycle light housing and bracket are made of high quality military aluminum alloy, waterproof, durable. Drop proof and shock proof. Make sure it is solid enough to complete your ride perfectly during hard cycling.