Logitech M570 Wireless Trackball Mouse – Ergonomic Design with Sculpted Right-hand Shape, Compatible with Apple Mac and Microsoft Windows Computers, USB Unifying Receiver, Dark Gray

• TRACKBALL COMFORT Sculpted shape supports your hand and stays in one place—move the cursor without moving your arm
• CONVENIENT CONTROLS Easy to reach Back/Forward buttons makes moving quickly between documents or browsing your favorite Web sites a breeze
• LONG BATTERY LIFE With up to 18 months of use from a single AA battery, you might just forget your trackball uses batteries at all
• EASY TO CLEAN Should you need to clean your trackball, removing the ball is a snap
• PLUG'N'PLAY CONNECTION Nano sized Logitech wireless unifying receiver stays in your computer— plug it in, forget it, even add compatible wireless devices without multiple USB receivers.Wireless operating distance: Approx 10m
• https://www.amazon.com/Logitech-M570-Wireless-Trackball-Mouse/dp/B0043T7FXE/ref=sr_1_174?qid=1567945176&s=electronics&sr=1-174