Logitech M570 Wireless Trackball Mouse – Ergonomic

• 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