1、An ideal digital clock DIY kit for electronics enthusiasts. Easy to install. 2、Automatic display of time, temperature and date. 3、Supports a large 4-digit LED display. 4、With light control, the clock will automatically be brighter in the daytime than at night. 5、Alarm function and timer function will work normally. 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. 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: green Power supply: 1 * CR1220 button cell( 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 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.