Olight H35 Wave Variable Output Rechargeable 5200mAh Li-Ion Battery LED Headlamp/Headlight, Black Super Bright 1500 Lumens featuring three advanced Cree XM-L2 U2 LEDs Long battery runtime with built-in 5200mAh high capacity rechargeable battery pack Ultimate hands free experience - simply wave to turn light on and off Battery pack comes with a battery status indicator and a 2A USB port that charges phones and tablets Water resistant from heavy rain, splashes, and other environments