The 3AAA UV, laser and flashlight product is the ultimate combo light. The LED flashlight produces 35 lumens of light with a 3 hour and 30 minute run time. Mode two is the Red LED laser pointer with distances over 35 meters while the UV (Ultra violet black light) provides a powerful UV illumination. The UV light can be used to detect counterfeit currency, blood, urine and special markings on driver licenses.