FM BORUIT 5000Lm 4 Modes CREE XML L2 2R5 Second Generation LED Headlamp Rechargeable Headamp Headlight Camping Fishing Light +US plug AC charger(No batteries included) Use Aluminum alloy case for the lamp, avoid high temperature, fall-off protection. Internal wiring adopts the high efficient booster circuit;Working voltage is wide and can utilize the batteries to the largest extent. Power Source: 2pcs 18650 3.7v Rechargeable Li-ion battery (no batteries included, please buy separate.) 4 Light Working Modes: One switch support 4 working modes by press: 1 LED Light&gt; 2 LED Light&gt; 3 LED Light&gt; 3 LED Strobe. Supper bright, Max output brightness come to 5000 lumens;90 degree adjustable headlamp for easy adjust the angle of light, comfortable and adjustable headband for wearing on head or helmet cap, handsfree and great for Outdoor indoor activities in darkness.