Features: Wth 3 color--red，green，white for choose；Durable LED Bulb for longtime using. Ideal for self-safety， hunting， cycling， climbing， camping， hiking， caving and outdoor activity etc. Also widely used at home like repairing or finding thing The sawtooth anti-skid design on the body surface provides convenient to carry and comfortable to use It uses a durable aluminum smooth reflector， provides a more concentrated beam for a better throw(range) Side Clicky Switch: click to constant-on Fit for mount of diameter: 30mmSpecifications: Material: Aluminum alloy LED: 11(4 white，4 green 3 red ) Operate voltage: 4.5V Battery type: 3 x AAA (not included) Dimension: 136mm ( length ) x 37mm( head ) Weight: 188g Color: Black