1. For Windows10 or later, Windows8, Windows RT, Windows7, Mac OS X10.5 or later, chrom OS, Linux kernel 2.6+ 2. Symmetrical curved design allows you to use both hands and allows you to feel a more comfortable and efficient experience than a touchpad. 3. The USB receiver has a small form factor and can be left in the USB port for easy movement with the laptop, reducing the possibility of loss. 4. Wireless reception range: about 10 meters wireless range 5. Size: 100x58mm 6. Power supply: 1 x AA battery (not included)
