Keys type: mechanicalSwitch type: Kailh BrownActivation force: 45 gKey travel (for activation): 2.1 mmKey travel (full): 3.8 mmKey life:> = 50 millionAnti-ghosting technology: 8-key rolloverMaterial: ABS, steel alloyKeys: 104Wrist rest: foldable, detachableRaising legs: foldable, rubberNon-slip rubber feetLED indicators: 4Power supply: via USB (5V, 200mA) ----------Backlight----------Colors: rainbowEffects: 8Brightness: adjustableTime: adjustable ----------Communication----------Communication with the computer: wiredInterface: USB 2.0Supported Operating Systems: Windows XP / Vista / Windows 7 / Windows 8 / Windows 10 / Mac ----------Physical parameters----------Braided cable: yes, nylonCable length: 1.6 cmWeight with cable: 1050 gDimensions: 450 x 223 x 32 mm