1. input: 11V ~ 13V, 1A, DC power (5.5-2.1) 2. Using STM8S005 as the main control, built-in procedures, welding light tube can be used directly. 3. Support seven color display clock (containing RGB lamp). 4. the use of high-precision clock chip, one year less than 1 minutes error 5. Using integrated IC unit program, the screen is more stable and reliable function: 24 hour mode, display time, anti program poisoning (every 10 minutes to cool the monitor), no alarm, remote control is not supported, No time switch machine Opertation: From Set time: click on "SET" key for seting time. lick "Up", "Down" to set the time, and click "Set" to . color set: Click "Up" in color adjustment mode (each day changes color). Click "Down" in a fixed color. colour: blue + black Material: Plastic size: 187x48mm Package Contents: 1 x Circuit board that has been soldered and debugged (No shine) 1 x black Case Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.