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.

• Receiver can be stored into transmitter
• Integrative pen design
• Micro SD card reader
• Warranty period: 1 year
• International standard met: CE, FCC, FDA & RoHS

Functions:

• Laser pointer
• Page up/down
• Blank screen
• ESC
• Receiver has Micro SD card reader function

Technical parameters:

• RF frequency: RF 2.4GHz
• Control distance: up to 10 meters
• Laser distance: up to 200m
• Battery: 1 x AAA 
• Operation system: Windows 2000/XP/Vista/Win 7/Win 8
• Interface: USB1.1, compatible with USB2.0
• USB plug and play, no driver required
• Dimension: 137 x 21.5 x 18mm

Packing:

• 1pc/gift box
• 100pcs/ctn
• Size: 38.5 x 33.5 x 31cm
• G.W./N.W.: 9/8kg