The 2600 is a premier hands-free light. It comes with a hi-intensity Krypton lamp for intense brightness, as well as an emergency back-up lamp stored inside the body. The light weight ABS resin body is corrosion proof, submersible, and virtually indestructible. A rubber strap for a hard hat and a comfortable adjustable cloth strap for bare head are both included. Also, for extra comfort a forehead foam pad is attached behind the body. The 90? pivoting head allows you to aim light right where you need it. The HeadsUp Lite 2600 is powered by 4 AA alkaline cells (included).