✅ Vertical Wireless Ergonomic Mouse: The J-Tech Digital V638’s comfortable, ergonomic “handshake” design greatly reduces arm/wrist/hand strain. Back/forward thumb buttons provide extra convenience. (Button functionality can also be changed or reassigned using third-party software.) Works on most non-metallic surfaces. The built-in lithium battery is fully rechargeable

✅Removable Palm Rest: This ergonomic mouse features a detachable non-skid anti-sweat palm rest that reduces drag, making it easier to maneuver the mouse across the surface of a mousepad, tabletop, desktop

✅Adjustable DPI: Users can adjust responsiveness to 800, 1200, 1600 or 3200 DPI depending on their need and/or preference. 360-degree signal allows for full freedom of ergonomic mouse movement. Optical Tracking Technology ensures greater sensitivity for precise tracking on a wide range of surfaces

✅Wide Compatibility: Compatible with Windows 7/8/10, XP, Vista 7/8, Linux, Mac OS, etc. A USB Nano Receiver/Dongle Transceiver connects the ergonomic mouse wirelessly to your computer, so you aren’t tethered by a cable