Cooler Master SK653 Wireless Mechanical Keyboard with Low Profile Switches, Improved Ergonomic Keycaps, and Brushed Aluminum Design - Gunmetal Grey (Red Switch) Low Profile Switches - A reduced travel distance and actuation point with the same signature durability and precision. Brushed Aluminum Design - Slim top plate, floating keycaps, and minimalistic design built with functionality in mind Hybrid Wireless - Choose between wired Type-C connectivity or Bluetooth 4.0 wireless for up to 3 devices. Ergonomic Upgrades - New and improved ergonomic keycaps compared to its predecessor and adjustable feet now give you an even more comfortable typing experience. Multiple OS Support - Compatible with Windows 8 and above, Mac OS X, iOS and Android - and easily soft-switch between all devices with a simple key combo. RGB Backlighting - Keep the lightshow going with per-key backlighting and endless customization. The SK653 hybrid wireless mechanical keyboard redefines form and function for both work and play. The full-size layout and minimalist brushed aluminum body makes it a perfect companion to any work- or battlestation, while low profile mechanical switches and durable, ergonomic keycaps give you the same tactile satisfaction of a heavy-duty mechanical keyboard. Add in convenient hybrid wireless functionality that allows you the option of wired USB-C or Bluetooth 4.0, and you have a keyboard that embraces modern and classic sensibilities.