Specification Brand : Treedix BulletPoint : TM1638 LED Display 8-Bit Digital Tube Module 3-Wire 16 Keys 8 Bits Keyboard Scan And KEY LED Display Module For Arduino DIY Kit BulletPoint1 : 0.56-inch 3-Digit 7-segment LED Display BulletPoint2 : Digital Display: 3 Digit; Common Anode; 12pins BulletPoint3 : Forward Voltage: DC 3.0V BulletPoint4 : Pitch: standard 0.1" (2.54mm) BulletPoint5 : It's can be used in Arduino project and other micro-controller development boards as output indicator. ExternallyAssignedProductIdentifier1 : 0741754914730 ExternallyAssignedProductIdentifier2 : 741754914730 IncludedComponents : LED Digital Tube ItemName : Treedix 0.56" 3-Digit 7-Segment Display Common Anode 3-Digit LED Display Digital Tube Compatible with Arduino (Blue,5pcs) ItemTypeKeyword : led-segment-displays Manufacturer : Treedix Material : Metal NumberOfItems : 5 PartNumber : TRX5-0525$ ProductDescription : Specification: Name:3-Digit 7-Segment Display Pin Number : 12 Size : 37.5 x 19 x 8mm(1.47*0.74*0.31in) Material : Plastic, Metal