WindFire&reg; Multi-Function 2 in 1 Super Bright 2 x CREE XM-L T6 U2 LED 4 Modes 3000Lm Headlamp Headlight with Adjustable Base &Bike Bicycle Light 18650 Rechargeable Batteries Cree LED Lamp Headlamp Headlight & 360 Degree Rotating Bike Bicycle Light with AC Charger and 2 x WindFire 4000mAh Rechargeable Batteries for Camping, Hiking, Climbing, Cycling, Travelling (2Pcs WindFire 18650 Batteries included) Adjustable base is provided for this head lamp, with back and forth inclination, Bike Mount provides for this bicycle light for 360 degree rotating. 2 in 1 functions: Bicycle light + Head Light.Output brightness comes to max 3000 lumens. 4 modes: 1 X U2 led / another U2 led /2 x U2 led/ Strobe.Bicycle mount is suitable for the handlebars approx 20mm - 26mm. 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.