ONEU Bike Headlight, 1800 Lumen Super Bright Waterproof Rechargeable Bicycle Front Light Bike Light for Cycling, Riding, Camping, Traveling, Hiking 1800 LUMEN OUTPUT MORE SAFER RIDING ON ROAD, this bike light will show you how bright it is, equiping with the latest Cree XM-L2 LED that provides Ultra Bright 1800 lumen output and up to 300 meter beam length and 50 meter beam width IP 67 WATERPROOF NO WORRY FOR RAINING RIDING, the lamp body is using the aluminium alloy material, completely waterproof and batteries are fully sealed and totally waterproof, fits for all temperature LED HEAD LIGHT FEATURE FOR EMERGENCY USING, hooking this small bike light onto the harness provided, this ultra bright bike light could also be used as a LED Head Light, safer and more convenient for outdoor using LONG USING TIME NO FEAR FOR LONG DISTANCE RIDING OUTSIDE, 4 Pieces 18650 batteries are sealed in the battery pack provide an output of 1800 lumen, 3 lighting mode optional, Ultra 4 hrs, Medium 5 hrs and Slow 6 hrs UNIVERSAL INSTALLATION FOR ALL KIND OF BIKES, 2 different size of diameter(4, 6cm), fits for all the bike handlebar on market, including Scott, GT, Trek, Jamis, etc. Zero tools for installation, very convenient for using