Used by: Military, Law Enforcement, Fire & Rescue. Super-tough, compact, lightweight flashlight is 40X brighter than regular flashlights and can be seen up to 5 nautical miles away! Made with high-grade aircraft aluminum, even running over it with a Humvee won't stop the Taclight! Works when frozen and even under water! With zoom function and 5 light modes, including strobe and SOS signal, it's great for camping, hunting and personal protection. 5.25L x 1.25 dia. Uses 3 AAA batteries, not included.