The 3AA ProPolymer HAZ-LO Helmet Lighting Kit is a hands-free lighting solution that also leaves you with a super-bright and useful LED flashlight to use in other applications. The one helmet lighting solution that solves all of your lighting needs. This lighting kit fits modern and traditional style firefighting helmets as well as most hard hats. The 3AA ProPolymer is a low profile, lightweight, and economical solution to more traditional stationary mounted headlamps. This kit has everything you need. Includes: 3AA ProPolymer HAZ-LO LED FlashlightSee below for specifications 3x AA Alkaline Batteries Streamlight Secure Helmet MountCan be used with 3AA ProPolymer as well as 4AA ProPolymer LED flashlights. Made of durable, lightweight aluminum. Attaches easily to the brim of firefighting helmets with no tools necessary. Rubber Helmet StrapCan be used with 3AA ProPolymer as well as 4AA ProPolymer LED flashlights. Quick and easy attachment, no tools necessary. Made with engineered high-strength rubber. Also fits most hard hats. 3AA ProPolymer Specifications: Light Source: C4 LED 50,000 hour lifetime Runs On: 3x AA alkaline batteries (included) Output: 120 lumens Peak Beam Intensity: 14,000 cd Peak Beam Distance: 237 meters Impact Resist Rating: 3 meters Water Resist Rating: IPX-4 Fully Anti static and non-conductive Weight (with batteries): 7.5 oz / 213 g Dimensions: Length: 7" / 17.78 cm Width: 1.5" / 3.81 cm Face Cap Diameter: 1.93" / 4.9 cm