Package included:1 x 51 LED UV Ultra Violet LED FlashlightSpecification:Prouduct name: 51 LED UV Ultra Violet LED FlashlightMaterila: Aluminium bodyMode: on-offEmitter type: 51 UV LEDPowered by 3 x AA batteries (not included)Features:water resistanceLong service life up and Light weightGreat for checking notes， credit cards， fluorescent inks (invisible inks)， cracked glassware， or even crime scene.