v & – Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10, Mac OS (only basic functions, NO software available). All J-Tech Digital Products include a One-Year Manufacturer Warranty and free lifetime technical support from our Customer Support Team located in Houston, Texas - Available M-F 9AM-6PM CST - Contact information available on the J-Tech Digital Seller Page. v – Customize the color of the LED backlight on this mouse and select the pulsating pattern and color alteration to your unique preference. v – Switch between DPI levels 600, 1200, 2000 and 4000 to adjust mouse responsiveness depending on your need and/or preference. Optical Tracking Technology ensures greater sensitivity for precise tracking on a wide range of surfaces. v – Utilizing the included software, users can modify the mouse to their liking by changing the DPI setting, button commands, macros, LED settings and more. (Windows system only*). v – The adjustable tilt on the V628X allows you to achieve comfort and ergonomic benefits from your mouse. Tilt the angle of the mouse from a range of 53 to 73 degrees to adjust the vertical positioning to your liking.*NOTE: The V628X mouse is suitable for large hands.