Product Description Product Features1. DuaLens Optical Design for Lowbeam Mode, providing broad closed range flood light with anti-glare low beam for commuting, no dazzle and glare for oncoming riders and pedestrians2. Dual LEDs for HiLo Beam System, providing illuminating light similar to automotive headlight with far reaching high beam and low beam3. Low battery warning and modes indicators4. Micro USB charging port, compatible with most phone chargers5. USB output port to charge other USB-powered digital devices6. Intelligent thermal management circuit to prevent overheat of LEDs7. Intelligent Memory circuit remembers the last used brightness level and mode when turned on again8. Quick release design for easily slide in and out9. Compatible with handlebar from 22.2mm to 31.8mm diameterTech SpecificationsLED: 2*CREE XP-G2 with a lifespan of 50000 hoursBattery: 3400mAh/3.7V rechargeable Lithium-ion batteryDimensions (Headlight): 85mm (L)*48mm (W)*27mm (H); Weight (Headlight): 165gMaterials: The front and main body is made by aluminum with Mil Type III Hard Coat Anodizing; the rear part and the handlebar mount are made by durable plastic Box Contains Bike light