Specification Brand : Generic BulletPoint : 4-Digit LED 0.56" Display Tube (decimal) 7-Segments Blue LED Display TM1637 Clock Double Dots Module 0.56 Inch For Arduino ItemName : Generic 4-Digit LED 0.56"" Display Tube (Decimal) 7-Segments Blue LED Display TM1637 Clock Double Dots Module 0.56 Inch for Arduino ItemTypeKeyword : led-segment-displays Manufacturer : Generic Material : Copper PartNumber : YGQ_MODULE_10946 ProductDescription : |This is a basic, 4-digit 7-segment display module . The display shows Double dots as shown. Module connecting to digital I/O on 2 pins. For Arduino use library: TM1637.h color:blue Package included: 1*4-Digit LED 0.56" 7 Segments Display Tube TM1637 Clock Double dots Module 0.56inch For Arduino