The USB Think Christmas Tree is a micro-computer controlled LED decorative Christmas tree.
Specification: Size : 20cm tall ;

25pcs LED light                                                                          
Connect the unit to USB port.
Six pcs red LED light up.
The Christmas tree lights up interactively with your typing.
The faster you type, the more colorful the LEDs light up and  the brighter the ball glows.
Slow down and stop typing will fade out the lights.