2.4G RF frequency, which is an ISM free frequency can be used world-wide<br><br> <b>Transmitter Features: <br></b> Technology: Radio Frequency<br> Frequency: 2.4GHz<br> Light Color: Red<br> Wireless Cursor Control Distance:  50FT<br> PPT Remote Control Distance: 100-165FT<br> Light Control Distance: >330ft <br> Max Output: < 5mW<br> Working Voltage: 1.5V<br> Sleep Current less than10uA<br> Dimension: 5.3x1.6x0.9 inch <br><br> <b>Receiver Features: <br></b> Operation System: XP, Windows 7/8, Mac OS, Linux, Android<br> USB Version: USB 1.1, compatible with USB2.0, USB 3.0<br> Working Voltage: 5V DC<br><br> <b>Package listing: <br></b> 1 x Wireless Presenter remote control<br> 1 x Wireless Receiver<br> 1x Portable Case<br> 1 x User Manual<br>