Fixes: Optimized power consumption. - Ergonomic form factor and tournament-grade layout - 16 fully programmable Hyperesponse keys - Programmable 8-way directional thumb pad and scroll wheel - Instantaneous switching between 8 key maps - Unlimited macro lengths - Stores up to 20 different game profiles - Adjustable soft-touch wrist pad for exceptional comfort - Backlit keypad and scroll wheel for total control even in dark conditions - Enhanced Razer configurator softwareApproximate dimensions in mm: 184(L) x 160(W) x 59(H) - Approximate weight: 250g Please do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games. Note: Try to set a system restore point before installing a device driver. It will help you restore system if installed driver not complete.