The ProTac HL USB is incredibly bright and features multiple power source capability; Streamlight 18650 rechargeable lithium ion battery, two CR123A batteries, or lithium ion batteries. The Ten-Tap programming lets you choose the selection of operating modes: 1- high/strobe/low, 2- high only, 3- low/medium/high. It is constructed from aluminum with an anodized finish, glass lens, push-button tail switch, anti-roll facecap, and is gasket sealed. Included is a removable pocket clip, holster, and 120V AC/12V DC USB charging cords.