#1 Handheld Blacklight Stain & Urine Detector UV-A Nullify flashlight shows hidden pet stains and other unfavorable spots on carpet or clothes Use it to authenticate notes, Id's, currency, documents, and passports Flashlight uses High Powered LED lights; each LED lasts up to 12 years Small size can be taken anywhere or easily stored! Over 5 hours of battery life, comes with three AAA batteries for operation