Vokul 3 Cree XM-L T6 U2 Led Head Light 3000 Lumens 4 Mode Flashlight with AC Charger for Camping Climbing Hiking Fishing One button switch : 1x XM-L T6/ 2x XM-l T6/ 3x XM-L T6/ Flashing Adjustable base 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