mechanical keyboard

●Transmission method: wired USB
●Keys: 108
●Key stroke: 4.0mm
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●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