Features: An ideal digital clock DIY kit for electronics enthusiasts. Easy to install. Automatic display of time, temperature and date. With light control, the clock will automatically be brighter in the daytime than at night. Supports a large 4-digit LED display. With the power cord, charging is very convenient. Alarm function and timer function will work normally. Transparent case helps you control real-time situations. Specification: Product type: Electronic DIY Kit Clock Material: ABS Display: 4-digit LED Display color: Blue, green, white, red for your choice Power supply: 2 * CR1220 button cells( not included) Installation difficulty: Easy PCB size: approx. 9.5 * 3.5 cm/ 3.7 * 1.4 in Package size: approx. 12.5 * 8.5 * 4 cm/ 4.92 * 3.35 * 1.6 in Package weight: 116g/ 4.11oz Package List: 1 * Electronic DIY Kit Clock