Allows you to complete plumbing, electrical and other tasks requiring both hands. Mounts comfortably and securely on head or hard hat with headband. LED lights with different illumination settings to control brightness and runtime. Beams produce spotlight or floodlight. Swivel head to adjust aim. Total lamp output of 80 to 150 lumens. Can be worn for long periods of time. Batteries included. Battery Type: Alkaline; Flashlights Type: LED; Power Source(s): 3 AAA (Included); Voltage: 1.5 V.