Please read attached. Product Name:Portable led ultraviolet germicidal lampSolution:Germicidal lampUVC wavelengt:253.70Irradiation distance::<30mmLamp bead life::continuous lighting for 10000 HSurface:anodizingApplication:desinfectionWeight:0.1KGType:fashionWarranty(Year):2-YearSupport Dimmer:noLighting solutions service:Lighting and circuitry designVoltage:5VApplication:HomeApplication:MEDICALApplication:HotelApplication:OfficePortable:yesLight Source:Quartz TubeSwitch Mode:Manual ButtonLuminous Efficacy(lm/w):30Rated Power:3WPower Supply:power bank or batterywavelength(nm):253.7UV Optiical Power(μW/cm2):2500Appplication Area(㎡):1 Show More