Equipped with 4 digit 0.56 red LED module specially designed for the digital clock
52 X 42mm FR-4 PCB board with large solder joint and pre-marked electronic components name, enable the soldering process easier
Programmed AT89C2051 MCU chip, precise time display, supporting seconds correction,hourly chime function and twice alarm clock setting
DC5.5*2.1 power port with 3-6V power supply, come along with the USB cable, easier to get the power supply support perfect for electronics learner training or school teaching
Ship it out in 1 business day by e-packet with tracking information and 7-17 days delivery time usually