ERGONOMIC DESIGN - Designed to be utilized in neutral 'handshake' wrist and arm positions for smoother movement and less overall strain helping alleviate wrist pain. REMOVABLE PALM REST & BLUE LED TRIM - This mouse comes included with a palm rest that can be easily detached based on the user's preference and convenience. It also features a blue LED, which lights up the outlining of the mouse. ADJUSTABLE DPI - Switch between DPI levels 800, 1200 and 1600 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. THUMB BUTTONS - Use the back/forward buttons located near the thumb area for optimum convenience, (button functionality can also be changed and reassigned using a compatible driver or software). WIDE COMPATIBILITY & FREE LIFETIME SUPPORT - Compatible with Windows 7/8/10, XP, Vista 7/8 and Linux etc. All J-Tech Digital Products include a One-Year Warranty.