If you have any questions, please contact customer service first, do not open disputes easily, thank you! Input: Micro USB 5V 1A /DC: 11V13V 1A: DC power supply (5.5-2.1). The welding light pipe can be used directly. Using imported high-precision clock chip, the annual error is less than 1 minute. Using integrated IC driver, the display is more stable and reliable.
8: Function: 24-hour mode, time display, anti-virus program (refresh the display every 10 minutes), no alarm, no remote control, no time switch. 1 circuit board (not including glow tube).
Software sales are not refundable.