[Function and support] Multimedia page turning pen remote function: page forward/backward support close control, low battery reminder, service/pause, hyperlink, switch window presentation, presentation, window [100m remote control range] The wireless demonstration remote control is equipped with top microchips to a real 100M/328FT remote control range, red light range: 200M/656FT. The power point demo clicker emits a bright red light, which is easy to see in most backgrounds. (Not recommended for LED/LCD/TV screens) [2.4Ghz high-sensitivity chip] Long-distance stable remote control and strong anti-signal interference [Easy to use] Plug and play demonstration tutorial, no need to install any software, the demonstration is easy to complete. The USB receiver is located at the bottom of this demo clicker and is easy to place to avoid loss. The curved design makes you more comfortable to hold. Support system: Windows 7/8 or above, OS / Linux / Android, powerpointer support software: PowerPointKeynote, PDF, Word, Excel Product Name: Multimedia Page Turning Pen Wireless: RF 2.4GHz Remote control distance: 100m Red light distance: 200m Working voltage: 3.7V Battery capacity: 200mAh Colour:black Material: ABS Size:13 x 2 x 1.3cm Package Contents: 1 x Wireless presenter 1 x Charging Cable(Charge B2) 1 x Chinese and English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.