?With this digital clock DIY kit£¬ you can make a creative clock by yourself. It looks very simple but practical for use. <br><br><strong>Features:</strong> <br>Adopts DS3231 high precision clock chip(with temperature compensation)£¬ it can still accurately travel time after powered by backup battery. <br>Gravity sensor function£¬ it can show time normally when you turn over the clock. <br>Special dot matrix design£¬ reminding important festivals and alarm clock function.? <br>Large digital LED display£¬ can show you time/temperature/date/day clearly. <br>The font and the display effect can be switched freely. <br>Has hourly and half hour chime functions(07:00-23:00) with slight buzz alarm. ? <br>Ideal digital clock DIY kit for electronics enthusiasts£¬ easy to install.? <br>Can connect with USB interface for power supply£¬ convenient for use. ?? <br><br><strong>Specifications:</strong> <br>Power Supply: USB Interface / 1 * 3V Button Battery£¨NOT included)(ONLY for travel time£¬ will not display) <br>Display: LED <br>Dot Matrix Size(1pc): 4.5 * 2.8cm / 1.77 * 1.1 <br>Acrylic Board Size(1pc): 10.4 * 8.4cm / 4.1 * 3.7in <br>PCB Size: 10.4 * 2.8cm / 4.1 * 1.1in <br>Package Weight: 142g / 5.02oz <br><br><strong>Package List:</strong> <br>1 * Electronic Clock DIY Kit <br>1 * USB Cable