USB typing measurement lamp

The “USB typing measurement lamp” is the USB lamp where the brightness which shines with the typing speed of the keyboard changes in 5 stages.If it strikes fast, the extent which is struck it shines brightly, it is the ♪ which is
Becoming [muki], practicing, typing speed rising directly you undertake!?
* Product specification: USB1.1 * Substance size: Approximately 60 (W) x 60 (D) x 110 (H) mm* Weight: 58g* Correspondence OS: windows2000 and XPWhen (the USB hub is used, there is a possibility of not operating.)