This pen has a remote control that can control 50 feet or even large rooms wirelessly. It is compatible with Windows XP/Vista/7/8/10, Mac OS, Linux, Android, and Linux. You can use wireless presentation clickers with PowerPoint/Keynote/Prezi/Word/Excle/ACD See/iWork software. Price drops from $25.99 to $19.99 to $10 when you apply the coupon code "E2GB070YHB9A" at checkout. Shipping is free.