HeadsUp LiteKrypton lamp for intense brightness, as well as an emergency back-up lamp stored inside the body. Body is corrosion proof and submersible. 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. Battery Size: AA; Body Material: ABS; Bulb Type: Krypton®; Includes: Batteries; Length: 3.810 in; Lumens: 25; Number of Batteries: 4; Run Time: 3.00 h; Watts: 4.50 W; Weight: 9.70 oz.