USB Negative Ion Ashtray - Engadget Simplified Chinese
by geekzhang on 2006-01-31 00:09:45
After being plugged in to a USB port, this negative ion ashtray will (theoretically) automatically generate negative ions to neutralize cigarette smells and achieve the effect of cleaning the air. If there is no nearby USB outlet, four AA batteries can also keep it working properly. In addition to the normal ashtray shape, it also has other designs shaped like footballs and cars. However, as usual, we can not help but wonder: can the weak power provided by a USB really do anything useful?
