Product Features:The keyboard has white backlight and 30 light effects.The knob can switch lighting effects and adjust backlight brightness.Long press the knob to switch to multimedia mode: previous, next, play/pause, mute.The SW1/SW2/SW3 keys customize the lighting effects.The keycaps is jointly studied by international manufacturers,produced with 79 complicated processes.We adopt double injection molding process to ensure accurate and non-fading color,uniform light transmission and high light transmittance.The body is electroplated to give the metal a gorgeous color.At the same time, the metal panel is resistant- to abrasion and corrosion.Professional blue switches,tested by professional players, comfortable, sounds crisp and durable.The keys' position is ergonomically placed to reduce hand fatigue.Commonly used in PC, laptop and desktop, compatible with MAC, Windows systems.Great for gifting to your family and friends!parameter:Number of buttons: 104 keysTransmission method: USB 2.0 interfaceKey conflict: All keys are not in conflictUSB Cable Length: 160cmDimension: 450(L) x 140(W) x30(H)mmSystem Support: Windows 10/Windows 7/ Windows 8/ Vista/ XP/ Mac OS...or latestPackage Included:1 x Keyboard one