Hands-free 5W COB LED spotlight with 40° angle adjustment. Dimmer switch allows brightness to be adjusted from 20% to 100%. Main light has one switch with 4-functions, on, flash, auto-sensor and off. Automatic sensor turns on and off when you move your hand in front. Rear of strap includes a red LED warning light which has 2-functions, flash or on, ideal for a cycling light. Adjustable headband and foam brow for added comfort. Powered by 3 x AA batteries (not included).