Specifications of the Fantech Maxfit70 MK911 Vibe Edition Mechanical Gaming Keyboard with Hot Swappable Switches and Tri-Mode Connections against Ghosting Switch Type: Maxfit Change Color: Yellow/Milky Brown Change 60 million keystrokes in a lifetime Yes, it is replaceable (hot-swappable). Seventy keys in total. Ghost-prevention: Complete keys Lighting: RGB with 22 settings ABS plastic is the top material. Double-Shot PBT keycaps ABS plastic for the core construction No wrist rest Rate of Polling: 1000 Hz 563 grams in weight Measurements: 345*116*40 mm 1.5-meter cable OS: Mac OS X and Windows. A USB port Software Requirement: Windows 7 or later MANY MOUNTING STYLES: Do it how you want! With its variety of mounting options, MAXFIT70 offers the highest level of personalization. You will be able to switch on the fly whether you prefer gasket-mount or plate-mount! TRI-MODE CONNECTION: The MAXFIT70's StrikeSpeed wireless, Bluetooth, and built-in