Specification AgeRangeDescription : adult Brand : YILUBAO BulletPoint : Operation mode: Automatic BulletPoint1 : Wavelength:638nm BulletPoint2 : Working Voltage:3V-5V BulletPoint3 : Size:12x35mm BulletPoint4 : Output Powerful:100 (m-w) BulletPoint5 : Spot:dot Color : Blue ExternallyAssignedProductIdentifier : 7861041823439 IncludedComponents : see details ItemName : Focusable 638nm-100 Red Laser Diode Module Dot Line Cross Beam 12 * 35mm Lighting USB (Line) ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 3 centimeters ItemPackageDimensions_Width : 2 centimeters ItemPackageQuantity : 1 ItemShape : Line ItemTypeKeyword : diode-lasers Manufacturer : YILUBAO Material : copper Material1 : Plastic Material2 : Metal ModelName : 638 ModelNumber : 638 MountingType : Surface Mount NumberOfBoxes : 1 NumberOfItems : 1 OperationMode : Automatic PartNumber : see details PowerSourceType : dc ProductDescription : Parameters Wavelength:638nm Output Powerful:100(m-W) Working Voltage:3V-5V Size:12x35mm Laser Shape:Dot/Cross/Line(120 degrees as default) Adjustable:Yes Working Temperature:-10-55 Degrees Features 1.This 650nm laser diode is an industrial electronic component and used for as Industrial testament, Lab, DIY. 2.It is precise and sensitive optical instrument. Before carrying on some laser DIY activities, please read about the technical information first and protect your eyes before laser ray. Be sure the operator has experience in optics DIY or testing. 3.Please wear 638nm laser protection goggles when you work on it.Thanks.