Details
Connection Strength The higher the signal strength, the more reliable your connection will be. Especially important in busy wireless environments like airports.
Tracking Quality Look for smooth, precise cursor control. The higher the quality, the easier it is to navigate documents and web pages. The best also work on more surfaces, including glass.
Wireless Receiver The receiver stays in your computer for cordless mouse control. The smaller the receiver (from standard to nano size), the more convenient it is. The Unifying receiver also lets you add compatible Unifying devices like a wireless keyboard.
Scrolling Performance Scroll through long documents and web pages without having to drag the scroll bar. Performance ranges from fast to hyper fast.