Feature:1. Using STM8S005 as the main control, builtin program, it can be directly used for welding lamps.2. This circuit board supports multicolor display, sevencolor display clock, including RGB lights.3. Imported highprecision clock chip can ensure that the annual error is less than 1 minute.4. The integrated IC driver, which can ensure the stability and reliability of the screen display.5. The PCBA supports 24hour mode time display, builtin antivirus program, and the display is updated every 10 minutes.Specification:Item Type: Circuit BoardMaterial: Printed Circuit Board + AcrylicInput: 12 VBatteryModel: CR1220 Battery ( Not Included ).Package List:1 x Circuit Board 2 x Acrylic Board8 x Screw 8 x Nut