Using two alkaline batteries, the ProTac 2AA is a versatile handheld flashlight the size of a marker that still gives users plenty of bright light. Compact and powerful, the ProTac series flashlights offer three different user selectable programs and the latest in power LED technology. The combination of small size and output from the C4 LED result in one of the brightest tactical personal carry lights for its size. The ProTac 2AA features a multi-function, rubber push-button tactical tail switch for easy one-handed operation of momentary, variable intensity or strobe modes. The TEN-TAP programmable switch allows the user to select one of three different programs: high/strobe/low (factory default), high only and low/high. Market applications include, but are not limited to, law enforcement, security, emergency medical services, sporting goods, and personal use..