Power:30W Voltage:3.7-4.2V Lifespan: 100,000 hours Lumens: 5000 lumens [lm] Battery: 2 lithium batteries(Short ciruit, overcharge and discharge protection) Grade of waterproof: IPX5 Headlamp Angle: 90°rotatable Light Color: White Material: Aluminum alloy casing + Elasticated adjustable headband Power Switch Function(At the top of the headlamp):ON/OFF Function, The Light Adjusting Function. One button switch supports 4 WORKING MODES: 1LED/ 2LED/3LED/ flashing. Adjustable base for 90 degree is provided for each head lamp, with back and forth inclination. Internal wiring applies the high efficient booster circuit, working voltage is wide. Output bright can come to max 5000 lumens. Easy to adjust&place on head. Help any senior navigate in the dark. Makes life easier and safer Brand other SKU SO445OT02Y6LWNAFAMZ-229194