1. Adopts aluminum alloy, frosted treatment process. 2. Wireless 2.4G transmission distance can up to 10m. 3. Optical mouse, to avoid the bright light hurt our eyes. 4. PIXART 3205 photosensitive chip, advanced laser technology and accurate positioning. 5. Bulit-in high performance lithium battery, charging to 3-5 hours, can be used about 90 days in daily work. 6. Plug and play, strong compatibility, can be used any computer system.