Streamlight epu-5200 portable power pack w/ 1-5mm led light FEATURES: -5,200 mAh of power-Removable pocket clip-Lithium ion battery rechargeable up to 500 times-High-impact, super-tough nylon polymer construction-Built in flashlight-Will charge most USB products w/ micro-USB input Other Features: Charges most usb products with micro usb input bulit in 1-5mm ultra brite white led light impervious to shock