It is a great tool for PowerPoint presentations! With it, you don't need to stand beside your computer or have an additional person click the slide for you! It contains two parts: transmitter and USB receiver.
1. Easy carry: The transmitter and receiver are integrated into one unit to easy carry!
2. Easily control the pace of your presentation: Advanced radio frequency (RF) technology that works through walls and control distance up to 15-meters / 50-feet away, so you never have to stand at beside of your computer.
3. Multifunctional presenter: It combines the functions of a laser pointer and hotkeys. If you need flash memory, the receiver supports to be added built-in flash memory. ( 64/128/256/512/1024MB optional ).
4. Easy to use: It is USB plug-and-play. No driver required. Just plug the receiver into the USB port on a PC and it works within seconds.
Battery: 1 x CR2032
Control distance: Up to 50 feet
Dimension: 87x33.5x9mm (transmitter), 63x33.5x9mm (receiver)
Interface: USB 2.0 Operation system: Windows 98/Se, Me, 2000, XP, Vista, Windows 7, Mac OS, Linux
RF Frequency: 433.92Mhz
RF Output Power: 0dBm
Sensitivity: -100dBm Sleep current: 1uA
Weight: 15g (transmitter), 10g (receiver)
Working voltage: 3V
Working voltage: USB electricity supply (4.5-5.5V)
1 x Transmitter,
1 x Receiver (USB extended cable is not included).