Meco 3Pcs 7-12V Six LED Digital DIY Clock Kit Electronic Learning Teaching Project

Function: Alarm clock Stopwatch Countdown Counter Features: Accurate working time, the error range for each 24 hours is -1 to + 1 second Supply voltage: 7V-12V PCB Dimensions: 92 x 49mm (Length x wide) More details and instructions: Click to open Package included: 3 x 6 Digit Clock Kit