[packing list] projection pen*1, without batteries. [item size] 138x23x13mm [Plug and play Wireless presenter] the Mini receiver USB is stored on the presenter tail with magnet system, Plug and play, no need to worry about driver installation. Remote control pointer supports hyperlink, volume control, window switch, full screen/black screen, page up/down. [ultra Remote Control range ] produces a bright red light that is easily visible against most backgrounds. Wireless pointer control range display: 30m, red light range: 200m, no Bluetooth. [Sleek and Exquisite Design] Soft silicone button design makes your thumb feel comfortable. A pressed button prevents you from pressing the wrong button. When the power starts to drop, the low power LED indicator will flash. [Wide Compatibility] The wireless presentation pointer supports the following systems: Windows 2003 / XP / Vista / 7 / 8 / 10, Mac OS, Linux, Android. The remote presentation software supports the following software: PowerPoint, Google slides, iwork (themes, numbers and pages), prezi, PDF, MS Word, Excel, ACD See, websites, etc.