0.36″ LED 4-Digit Display Modules Digital Tube Brightness Adjustable w/ Clock Point for Arduino
The module is based on a 4 digital tube (0.36 inches) which can display the clock point. The decimal point is not displayed and the driver chip is TM1637. Simply two signal lines can make MCU control 4-digit 7-segment LED. It can be used to display the integer, clock, stopwatch, score and so on.