1. Ergonomic use angle
2. Wireless receiving adapter
3. Four-corner silicone foot pad support
4. The touchpad cursor function and digital function can be switched
5. Working voltage: 1.8-3.0V
6. Working current: about 2.5mA
7. Battery: 2 x AAA (not included)
8. Product size: 25.8x9.8x1.5cm