The Razer BlackWidow Ultimate takes you full speed into combat with a full-fledged mechanical key infrastructure delivering crisp, tactile feedback with every actuation. Bringing an entirely different feel and faster keystroke actuation to the table, this revolutionary fully backlit gaming keyboard is rounded off by its additional macro keys and unlimited on-the-fly macro recording. Mouse Included: No System Requirement: PC with USB port Windows 7 / Windows Vista / Windows XP Internet connection (for driver installation) At least 75MB of hard disk space Dimensions: 18.7" x 6.73" x 1.18" Features: Full mechanical keys with 50g actuation force Individually backlit keys with 5 levels of lighting 1000Hz Ultrapolling / 1ms response time Programmable keys with on-the-fly macro recording Gaming mode option for deactivation of the Windows key 10 customizable software profiles with on-the-fly switching 5 additional macro keys Gaming optimized key matrix for minimized ghosting Multi-Media Controls Braided cable Audio-Out / Mic-In Jacks USB-Passthrough Parts: 1 year limited Labor: 1 year limited