Waterproof， without batteryAluminum alloyModel of LED: CREE XM-L T6Output bright can come to max 2200 lumens [lm]Internal wiring applies the high efficient booster circuit， working voltage is wide and can utilize the batteries in the largest extentAdjustable base is provided for each head lamp， with back and forth inclination3 Switch Modes: Strong Brightness / Normal Brightness / Flashing100v-240v Battery Charger ( LED indication for Power On / Charging / Full charge )Model of Battery required: 1 x 18650 3.7V / 3x AAA batteryColor: BlackDimension: 38mmWeight: 120gPackage Includes:1 x CREE XM-L T6 LED Rechargeable Headlamp1 x AAA Battery Holder (for using AAA battery， not includes battery)