The ProTac HL by Streamlight is a high lumen, tactical, programmable flashlight that provides 600 lumens of light with 253 meters of beam distance. The C4 LED is impervious to shock and has a 50,000 hour lifetime, and there are three output levels: high (600 lumens), low (33 lumens), and strobe. The multi-function push-button tail switch allows for one-handed operation, and the glass lens is O-ring sealed, making the flashlight waterproof to one meter for 30 minutes. The ProTac HL comes with a removable pocket clip, a nylon holster, and two CR123A lithium batteries.