The Streamlight Stylus Pro USB is a rechargeable penlight that conveniently charges via USB connector - to wall or computer. It features C4 LED technology for extreme brightness. It is IPX4 rated for water-resistant operation. All of the openings are o-ring sealed. It has a Micro USB charge port under water resistant sliding cover. It is rechargeable using supplied USB cord. It comes with a removable pocket clip and a holster.