Logitech K840 Mechanical Keyboard with Romer G mechanical Switches for PC Color:Black There are two speed settings

There are two speed settings which give you complete control over the experience

Standard battery door

000-watt (red leaf)

0 inches/12

Logitech K840 Mechanical Keyboard with Romer G mechanical Switches for PC Color:Black There are two speed settingsThe quiet operation and responsive tactile feedback you love. The long lasting durability you demand. The K840 mechanical keyboard features a solid aluminum build with expertly engineered Romer G mechanical switches tested for 70 million+ strokes. 26 key Rollover helps ensure each keystroke performs accurately and independently as you type. System Requirements: Windows 7 Windows 8 Windows 10 or later Internet connection for optional software logitech.