A mouse Key quantity: six buttons 800/1200/1600/2400 dpi is the resolution. Frame rate maximum: 4000 fps 30 ips is the maximum tracking speed. 250 Hz is the maximum polling rate. Length of wire: 1.8±0.01 m Measurements (W x H x L): approximately 123*68*40 mm Layout of the keyboard: ESN, ARA, RUS, ENG 19 keys to anti-ghosting 12 shortcut buttons; OS compatibility: Windows XP, Vista, 7, 8, 10, 11, and MAC OS X USB interface Length of wire: 1.8±0.01 m Measurements (W x H x L): approximately 475*200*37 mm