2.4GHz Wireless Handheld Multipurpose Trackball Mouse with USB Receiver
Two using ways: Hold in hand and place on desktop - With left/right clicker optical trackball and scroll wheel - 2.4GHz working distance within 10 meters - Plug and play - Built-in rechargeable battery working time up to 20 hours (3-4 hours charging) - Come with a charging USB cable and USB receiver