Description:  1. Input: Micro USB 5V;  2. Using STM8S005 as the main control, built-in procedures, welding light pipe can be used directly.  3. Support seven clock color display (containing RGB lamp).  4. The use of imported high-precision clock chip, a year less than 1 minutes error;  5. Using integrated IC drive program, the display is more stable and reliable;  6. Size: 187x48mm;  7. Function: 24 hour mode, time display, anti poisoning program (every 10 minutes refresh the monitor), no alarm, remote control is not supported;  No time switch machine.     Opertation:  Set Time: click "SET" key into seting time.lick "Up", "Down"to set time, and click "Set" to finish.  Set black light color: Click "Up" into color tuning mode (every day change color). click "Down" into fixed color.     Package includes:   1 x Circuit board  (without glow tube)