Compact and lightweight, the ProTac HL 3 is incredibly bright with 1,100 lumens. It's the brightest addition to the ProTac series and one of the brightest tactical lights of its size. It uses a C4 LED, with a 50,000 hour lifetime. It has an o-ring sealed glass lens. It uses three (3) 3 Volt CR123A lithium batteries, with a shelf life of ten years. It has a multi-function, push-button tactical ON/OFF tailswitch. The Ten-Tap programmable switch allows user selection of one of three different programs: high/strobe/low (factory default), high only, or low/high. It has an IPX7 rated design and is waterproof to one meter for 30 minutes. It has an anti-roll facecap and removable pocket clip. It is also serialized for positive identification.