Zoomable Led Headlamp 3 Modes 800 Lumens CREE XML T6 Bicycle Headlight 3-in-1 Multi Function with 2x Rechargeable Batteries Output bright can come to max 800-1200 lumens [lm] Internal wiring applies the high efficient booster circuit Waterproofing design;3-Modes Switch:Mode:High/Low/Strobe Zoom Technology: Adjusting zoom ring out to focus far away and in to zoom for large lighting area. Applications to Make Your Hands Free: Widely utilized for camping, fishing, hunting, riding etc.