LemonBest Bright 395 nM 51 UV LED flashlight Black light 3 AA Battery Camping Ultraviolet Outdoor Light Torch Lamp Professional-grade flashlight produces 395-400nm (nanometers) ultraviolet wavelength with 51 UV LED Perfect for outside use such as hunting scorpions and minerals Hotel room inspection, rodent contaminationEssential tool for law enforcement, postal inspections, customs, medical forensics, HVAC repair 51 UV LED bulbs provide coverage of larger areasUse 3 AA Standard Alkiline Batteries ( Not included ) 51 LED lighting is 51pcs LED lamp beads of 395nm wavelength