SecurityIng 2600LM 3X L2 LED Headlamp Bike Bicycle Light Lamp + Rechargeable Battery Pack + Charger + Head Strap (Black) Adopts Cree XM-L2 LED chip, provides equal and stable brightness with excellent life, maximum brightness can be up to 2600LM. Real high brilliance with aluminum reflector cup, long distance irradiation, high efficient illuminance. The standard 4 pcs 18650 li-ion battery pack is with digital circuit system and protecting functions of wrong polarity, over charging, over discharging, it is rechargeable and recyclable, safer for your using. Simple structure, easy installation for bicycle using as well as headlamp using. Widely used in various kinds of outdoor activities, such as camping, fishing, night walking, daily home facility maintenance and etc.