Plus points: + Delivery the next day, well packaged. + Installation is foolproof declared both in the form of step-by-step illustrations as leaflet as well as a video on the website (just scan the printed code, then comes the video). Read + Includes instructions and / or watch video last installation and setup about half an hour. + The setup is easy using the instructions. + Operation via the 4 keys is simple and logical, most of the features we do not need but eh. Bad points: - So far, nothing noticed negatively. We have now bought the same device for the wheel of my wife. Tips: 1. You need possibly a tape measure to measure the actual tire diameter exactly (diameter times pi (= 3.141) yields the extent known), and the more accurately you enter the scope, the more accurate the values displayed by the instrument. 2. I have the sensor (as shown in the instructions) not forward, but towards the rear mounted, to protect it, if you times moves through the undergrowth. 3. The clipping and axial displacement of the spoke magnet is difficult (to right), so you should use the magnet as possible exactly clipping on where to sit ultimately. 4. The distance between transmitter (speed transmitter) and spoke magnet should be no more than 10 mm (but not much less), otherwise there is no reliable signal. 5. I have first installed using the supplied rubber rings that keeps Me yet firm enough but then replaced with cable ties, because this is a major obstacle to casual thieves. 6. The suspension of the rubber rings is something pfriemelig, but it's easier if you it stretches quite far here - apparently they keep out without tearing.