This mouse features silent click technology – no more annoying those around you with constant noise as you work or play on your computer. Works with both PC or Mac. It has 3 DPI settings 800/1600 and 2000 – which adjust the sensitivity and how much input moves the cursor. The internal battery saving technology means you won’t have to think about replacing the battery for a very long time. It connects via 2.4ghz with up to 30 ft of operational distance.