Bbb strike 500 rechargeable head light lightweight and compact usb rechargeable headlight powerful 500 lumen xm l cree led exchangeable internal energybar bls 93 battery pack quick and easy to charge by usb airflow cooling system acs for optimum heat control 5 modes super beam high beam standard beam low beam and flash beam water resistant casing rubber enclosed water resistant switch multifunctional power indicator indicates empty battery red light light on blue l