SODIAL(R)2.4G Optical Wireless Mouse Shaped USB Pen Stylus for Smartphone - Blue 1) Suitable for Business Conference, PPT presentation, teaching, etc. 2) 2.4G Wireless Pen-Shaped Mouse, 10m effective range, USB receiver is plug and play. 3) Mouse movement with inertia to move freely on any surface except glass. 4) Operating System: Windows 7/ 8/ Vista/ XP/ 2000, Linux, Mac OS.