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51 LED lighting is 51pcs LED lamp beads of 395nm wavelengthProfessional-grade flashlight produces 395-400nm (nanometers) ultraviolet wavelength with 51 UV LEDPerfect for outside use such as hunting scorpions and mineralsHotel room inspection， rodent contamination；Essential tool for law enforcement， postal inspections， customs， medical forensics， HVAC repair.51 UV LED bulbs provide coverage of larger areas；Use 3 AA Standard Alkiline Batteries ( Not included )Specifications:Lighting: 51 pcs UV ledLED Type: LED 395 to 400nmBulb Life: 100，000 hrsBody Material: aluminumBody color: BlackBattery Require: 3 x AA alkaline batteries (not included)Switch Type: push On/Off buttonHead Diameter: 2.25" or 57mmBody Diameter: 1.42" or 36mmLength: 5.80" or 148mm Package including: 1x flashlight ( no batteries inside)***Warm tips:*** In order to keep the long lifetime， please do not remove the light head randomly.Buy in Confidence and satisfaction.Factory directly sell， 100% Brand NEW， 2 years warranty. shipping time is 7~ 15 days.