2.4Ghz wireless technology provides reliable connection within a range of 10 meters, allows you to say goodbye to the wired shackles and operate more freely High precision optical engine accurate positioning, up to 1200dpi, to meet the daily use of office and game entertainment Ergonomic design the smooth and comfortable shell fits the curve of the hand, and the abs material of the mouse provides comfortable touch while increasing friction. even if used for a long time, the hand is not easy to fatigue Silent click soundless design for the right and left buttons it won't disturb others and you can focus on your work Slim design lightweight and portable, you can easily put it in a bag or pocket