ITEM NAME:Robotdyn 4 Digital Led 0.56inch Display Tube Clock Double Dots 7-Segments, V5X6 Robotdyn 4 Digital Led 0.56inch Display Tube Clock Double Dots 7-Segments, V5X6 Dots: clock, double Driver IC: TM1637 The screen has two points in the middle. The decimal point per digit is not active. 2-pin digital I / O connection module. LED digital tube display :Green light colour:Black Material:plastic + metal size:5 *1.9*1CM Package Contents: 1*4 Digital LED Display Tube