It's a Keyboard and a Mouse! Keep your hands in typing position while moving the mouse. Efficient and easy. 2 Mouse Sensors - one under each hand. It's a Keyboard and a Trackball! Keep your hands in typing position while moving the mouse. Efficient and easy. Mouse Sensor in Both Hands There are lots of advantages to having 2 mice + keyboard in your hands at all times.
![KeyMouse® - The Keyboard and Mouse Re-invented!](https://cdn-ak-scissors.b.st-hatena.com/image/square/7172ccf4cd6cc9ece21f5af27085ee091b6dda52/height=288;version=1;width=512/https%3A%2F%2Fwww.keymouse.com%2Fimages%2Fsliders%2Fcompact2%2FTop2.png)