Pocket Mate USBFeatures bright white LED with high and low modes Optimal area illumination Lithium polymer battery charges in 4 hours The USB rechargeable Pocket Mate is small in size but big on power producing 325 lumens. Ultra compact design makes it easy to always carry it with you. No need to juggle your belongings, simply attach it to a zipper or keep it handy on your key ring. Drop it in your pocket or clip it to your visor for hands free use.