Specification:9 LED blacklight flashlightLength: 8.5 cmDiameter: 2.5 cmColour: blackFeatures:Long service life up to 10，000 hoursAluminium body， light weightGreat for checking notes， credit cards， fluorescent inks (invisible inks)， cracked glassware， or even crime scene.Instruction: Press once will continue on. Press again will turn it off.Powered by 3 AAA batteries (not included) Package included:1 x 9 LED FlashlightWe also offer red colorclick heresilver colorclick here