WindFire&reg; Multi-Function 2 in 1 Super Bright CREE XM-L T6 U2 & XPE R2 LED 4 Modes 3000Lm Headlamp Headlight &Bike Bicycle Light with Adjustable Base 18650 Rechargeable Batteries Cree LED Lamp Headlamp Headlight &Bike Bicycle Light with AC Charger 2 x WindFire 4000mAh Rechargeable Batteries for Camping, Hiking, Climbing, Cycling, Travelling (2Pcs WindFire 18650 Batteries included) Adjustable base is provided for each head lamp, with back and forth inclination. 2 in 1 functions: Bicycle light + Head Light.Output brightness comes to max 3000 lumens. 4 modes: T6 LED light on / 2 R2 LED light on / 3 light all on/Strobe. waterproof design, aluminum alloy case, avoiding high temperature, anti fall off. Model of Battery required: 2x 18650 3.7v (Battery Included ) Can be used as a headlamp or bike bicycle light.Wonderful headlamp bike light suitable for outdoor sports, such as camping, traveling, hiking.