●Transmission method: wired USB 
 ●Keys: 108 
 ●Key stroke: 4.0mm 
 00000986818 
 ●Key life times: about 50 million times 
 ●Rated voltage/current: DC 5V/250mA 
 ●Product size: 435(L)x 123(W)x 38.5(H)+0.5mm 
 ●Hand rest size: 435(L)x 68(W)x 14.5(H)+0.5mm 
 ●System requirements: Vista/Windows 7, 8, 10/Mac