1. Wireless free movement within a distance of 10 meters
2. Frequency resolution conversion button: capable of switching between three levels of frequency resolution (800dpi-1200dpi-1600dpi)
3. Optoelectronic sensing for accurate positioning
4. Streamlined design, smooth appearance, and innovative style
5. Using 2 x AAA batteries (not included)
6. Lightweight and portable
7. Size: 11x5.5x4cm