Features: The clock has the design of digital tube display principle. The whole plug-in component design makes the production success rate up to 99.9%. Six time animations that make you never tire of watching. Seven off-line animation, a good gift to friends. No need to set a time again after power lost. The electronic clock shows temperature and time alternately. You are no longer look at the phone to see the time and the temperature. The alarm function helps you no longer to worry about getting up. The brightness can be adjusted according to the environment automatically. The program of the clock has been already set up. You can be install it directly. This finished clock can be used as art for home, school, and office. Specifications: Material: Plastic PCB Board Size: 81MM X 81MM/3.19 X 3.19Inch SCM Program: Yes(Already set up, directly to use) Operating Voltage: 5V (Mobile phone charger, charge pal, usb are available to supply power.) Battery Model: 1 x Button Battery(Included) Battery Capacity: 40mAh Digital Tube Color Selection: Red, Blue, Green(Optional) With Case: Optional Function: Precise temperature measurement, precise time measurement, power-off memory, alarm setting (can be turned off), and light control (can be turned off). Weight: 68G(Clock + USB Cable), 136G(Clock + USB Cable +Case) Package Included: 1 x Light Control Clock Kit With Installation Accessories 1 x USB Cable .