SecurityIng&reg; 1000LM 2X T6 3 Modes LED Headlamp Bright Bike Headlight with Adjustable Base (18650 Battery Not Included) The lamp support fixing on the bicycle with the rubber ring, working as a bicycle lamp. Comes with elastic rubber band sealing ring with the lamp, it can also working as a headlamp. Internal wiring applies the high efficient booster circuit utilize batteries to the largest extent. Adjustable base is provided for each head lamp, with back and forth inclination. Widely used in camping, fishing, night walking and daily home facility maintenance.