Fast delivery, well packaged. Product comes in pretty box. There is a manual in English if you can read realyrealy tiny letters. I believe it is a translation so it might take some puzzling to figure out what it is actualy trying to convert. Luckaly the unit is quite intuitive once you figure out that the laserpointer is your airmouse on/off button. It works perfect on my NVR. Product and seller recommended.
Works really well, you need to press the laser button to get the mouse cursor to move on the screen and then press the laser button again to make it stop the gyro tracking. Still not sure how to fully turn it off. Sould come in handy for my lectures.