Specification Brand : Adafruit BulletPoint1 : MULTIPURPOSE - Our blank circuit boards are great for your various electronic hobbies, such as etching, making models, testing, circuit projects, etc. BulletPoint2 : WHAT YOU GET - The package comes with 2 Pcs copper clad board that measures 70mmx50mmx1mm(L*W*H). BulletPoint3 : RELIABLE MATERIAL - The PCB board is made of FR4 glass fiber, copper-plated surface, durable and stable, with good adhesion of the copper to the fiberglass (no peeling or chipping). BulletPoint4 : SPECIAL DESIGNED - The blank PCB is specially designed for making your own PCB circuit boards or making signs for your business. BulletPoint5 : KINDLY NOTE - The boards may come with surface marks or scratches but don't affect performance. BulletPoint6 : Current - Output High, Low: 8.8mA, 8.8mA Color : 50HZ ConnectivityTechnology : USB ExternallyAssignedProductIdentifier : 8017249577219 IncludedComponents : IC INVERT ItemName : Audio IC Development Tools VS1053 Codec + MicroSD Breakout - MP3/WAV/MIDI/OGG Play + Record - v4 ItemPackageDimensions_Height : 7.62 centimeters ItemPackageDimensions_Length : 7.62 centimeters ItemPackageDimensions_Width : 7.62 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : circboard-prototyping-boards Manufacturer : YOKIVE Material : copper ModelName : GQNAUIGJP ModelNumber : 43237-2 NumberOfItems : 150 OperatingSystem : Windows PartNumber : 43237-2 ProductDescription : Adafruit ProductSiteLaunchDate : 2015-01-30T16:16:56.563Z Size : 70mmx50mmx1mm SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1