Features & details 19 MMO optimized programmable buttons for unlimited combos Wireless gaming-grade technology for unbridled maneuverability In-game MMO Configurator. System requirements:PC or Mac with a free USB port, Windows 10 / Windows 8 / Windows 7 / Mac OS X (v10.8 - 10.11),in-game configurator support is compatible with Windows 10 / Windows 8 / Windows 7 only Mechanical thumb grid buttons Ergonomic form Factor 19 MMO optimized programmable buttons for unlimited combos Note : In case of Wireless mouse, the USB receiver will be provided inside or along with the mouse Wireless gaming-grade technology for unbridled maneuverability In-game MMO Configurator. System requirements:PC or Mac with a free USB port, Windows 10 / Windows 8 / Windows 7 / Mac OS X (v10.8 - 10.11),in-game configurator support is compatible with Windows 10 / Windows 8 / Windows 7 only Mechanical thumb grid buttons With refined ergonomics, Chroma customizable lighting and intuitive in-game overlay support, this epic MMO gaming mouse fits your hand perfectly and can be personalized to your exact preferences. Its tilt-click scroll wheel, improved mechanical thumb grid buttons and greater number of programmable buttons, increase the arsenal of spells at your fingertips as well as the precision you enjoy. With refined ergonomics, Chroma customizable lighting and intuitive in-game overlay support, this epic MMO gaming mouse fits your hand perfectly and can be personalized to your exact preferences. In any MMO, the more spells you have instant access to, the greater your advantage becomes. The Razer Naga Epic Chroma features a total of 19 buttons, including the iconic Razer Naga's 12-button thumb grid to maximize the actions at your disposal. The Razer Naga Epic Chroma's gaming-grade wireless technology gives you completely unrestricted movement without compromising on mouse control or accuracy. With a response rate of 1ms whether wired or wireless, your Razer Naga Epic Chroma delivers peak performance all the time. Furthermore, by plugging in the USB when the battery is running low, your Razer Naga Epic Chroma charges while you use it, so you get zero downtime all the time. Introducing the most intuitive mouse configurator you'll ever need for MMO gaming. Customize each and every button on the Razer Naga Epic Chroma to your personal skillset and set up macros and hotkeys right from in the game via a non-intrusive overlay. The thumb grid can be visually displayed with icons right from your favorite MMO so you'll know exactly what button to hit at all times.