Black 1mw RF 2.4GHZ Wireless Presenter Flip Red Laser Pointer Pen:

　
Function:Presentation

Red Laser Beam 
Technology: RF 2.4GHZ
Receiver Type: USB receiver
Page-turning Support
Output Power: 1mw
Irradiated Range: 15m
Wavelength: 650nm
Voltage: 12V
Battery:  123A battery (included)
Install driver: N/A
Supported PC System  Window: XP/Vista/7/Server 2008

Silver 1MW RF Wireless Presenter Red Laser Pointer Flip Pen:

Page down and page up buttons.
Lock/unlock switch.
You do not need to make unneccessary trips back and forth to the PC/Laptop or require a personal assisstance.
Frees yourself from the inconvenience of using the mouse to navigate slides.
You are totally in control and are able to concentrate on your presentation only.
Remote control range over 15 meters.
Works on any computer with USB port.
Comes with a USB receiver for use.

Product Details (including package):
weight:109 g
size:11.5 x 1.5 x 1.5 cm

Pack including:
1 × Laser Pointer Flip Pen
1 × USB Receiver
1 × PU Leather Case