√ ERGONOMIC DESIGN & REMOVABLE PALM REST - Designed to be utilized in neutral "handshake" wrist and arm positions for smoother movement and less overall strain helping alleviate wrist pain. This mouse comes included with a palm rest that can be easily detached based on the user's preference and convenience. | √ WIRELESS MOUSE WITH USB DONGLE – Avoid the hassle of being tied down with a wired or cable, use the include Dongle Transceiver to connect wirelessly to your computer. The mouse is a simple plug and play device, your computer will detect it automatically after plugging into a USB port. (NOTE: THE USB RECEIVER IS LOCATED INSIDE OF THE BATTERY COMPARTMENT.) | √ 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 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.