8 Black Germany Cherry MX Mechanical Keys + Rest Ka, Short Form in Extreme Spec, Extremely Portable for Carrying Your Gears Around, Small Backpack Fitted , Space Saving * Keys to Success: "Germany" Cherry Mechanical "Black" Keys for Best in Class Gaming Response and Speed Typing. Gold-plated Switches for Lowest Latency, Extreme Durable. * Unbelievable Life Time: 50 Million Keystrokes for Black Cherry Key * PS2/USB: Suitable for Professional Gamer with PS2 Com Port, USB Compatible for Every PC