Feature: 1. Ideal digital clock kit for electronics enthusiasts, easy to install. 2. Compact for installation, easier for welding by users. 3. With transparent case, components can be well protected and the clock looks stylish. 4. Automatically display time, temperature, date and day. 5. Light control, the clock will automatically be brighter during the day than during the night. Specification: With this digital clock kit, you can make a nice clock by yourself. With transparent case, components can be well protected and the clock looks stylish. Features: Ideal digital clock kit for electronics enthusiasts, easy to install. Compact for installation, easier for welding by users. With transparent case, components can be well protected and the clock looks stylish. Automatically display time, temperature, date and day. Light control, the clock will automatically be brighter during the day than during the night. Large 4-digit LED display, can show you time and temperature. Useful alarm function and hourly chime function. With a power cable, it is convenient to be charged. Note: The item color might be slight different in the picture because of the lighting effect, pls in kind prevail! Do not install the chip reversely. After installing the digital clock, please push all the buttons for more than 5 seconds to reset. It will display 7:59 once reset. Then you can set other functions by following the instructions. The goods are delivered in pieces, which need to be welded and assembled by themselves and equipped with installation instructions. Specifications: Display: 4-digit LED Display Color: Blue Power Supply: 1 * CR1220Battery (NOT included) PCB Size: 9.5 * 3.5cm / 3.7 * 1.4in Package Size: Approx. 12.5 * 8.5 * 4cm / 4.92 * 3.35 * 1.6in Package Weight: 123g / 4.33oz . Package List: 1 * Digital Clock Kit(Battery Not Included) 1 * User Manual（EN）