Most Powerful 1200 Lumen High Low Beam Cree XM-L U2 LED Rechargeable Li-ION Battery Bicycle Light Headlight Flashlight Black Highest Quality Aircraft Aluminum Alloy Waterproof Easy to Install Improves Safety Dark Rides Snowboarding SkiingDaytime Rides Road Mountain Touring Hybrid Commuter City Comfort Track and Trekking Bike Compatible Caving Climbing L33 New model more powerfull updated circuitry . Two beam patterns. Easy installation no tools required. Brightens the darkest roads instantly improves safety and visibility. Up To 3 hours on high and 6 Hours on Low strobe Aluminum heat sink to dissipate heat. Li-Ion battery with charger. Daytime Rides Road Mountain Touring Hybrid Commuter City Comfort Track and Trekking Bike Compatible Caving Climbing