Most Powerful 2400 Lumen Best Angle Eyes Halo High Low Beam 2 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 New model more powerfull updated circuitry . Angels eyes halo with 2 Cree LED Easy installation no tools required. Brightens the darkest roads instantly improves safety and visibility. Up To 3 hours on high (2400 lumens) and 6 Hours on Low(850 lumens) strobe 2400 lumens 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