Acebeam UC15 LED Key Chain Flashlight

Considering its 1000-lumen peak output, it seems strange to call the Acebeam UC15 a key chain flashlight, but at just 2.6" long and 1.4 ounces, that's what it is. The UC15 is a dual-fuel light—it can run on size 10440 lithium-ion batteries, which yield brightness levels of 10, 200, and 1000 lumens, or on two standard AAA alkaline batteries, which produce outputs of 10, 82, and 250 lumens. Along with the three levels of white light, the UC15 can also shine red light, which can help preserve night-acclimated vision during activities like stargazing, and UV light for document examination, auto repair, or forensic science.