2.4GHz digital wireless technology with unlimited 360-degree reception. The powerful and reliable digital signal means that even in the most active wireless environments you will not experience any delays or broken connections while enjoying an effective range of over 15m. Support for up to 8,388,608 sets of IDs with automatic frequency hopping anti-jamming technology. The wireless receiver can be stored away in the base of the mouse itself. This special design makes it easy to carry and hard to lose. Laser technology provides better tracking power than LED optical mice. The ergonomic soft rubberized sides provide the most comfortable grip. Four-direction scroll-wheel provides quick scrolling up, down and across the page. Battery power switch design offers a unique power-saving function.