WindFire&reg; New Outdoor Super Bright CREE XM-L XML T6 U2 LED 1800 Lm Headlamp Rechargeable Headlight + AC Charger & 2x WindFire 4000mah 18650 Rechargeable Batteries for Outdoor Hiking, Riding, Camping and Other Activites CREE XM-L T6 U2 LED makes Output brightness up to 1800 lumens(Maximum), perfect for outdoor activities like camping, fishing, hiking Material: Aluminum alloy casing, avoid high temperature, fall-off protection Internal wiring applies the high efficient booster circuit 3 switch Mode: Strong Brightness / Normal Brightness / Strobe Power Source: 2 x WindFire 4000mAh 18650 Battery ( Included )