NEXTORCH K10 LED mini lights are compact, sleek, fashionable and a must-have for daily use. The stainless steel key ring hitches to your backpack, keys or other items for everyday carrying. Utilizing the most advanced LED technology, the K10 produces efficiently bright output and comes equipped with a unique SLIDE SWITCH, making one-handed operation a snap. The K10 mini-lights are a convenient and necessary addition to your everyday accessories. Operates on 1-AAA battery. 65 lumen output.