If I treat myself to a new bike, so is the "peripheral" with replaced. I fummle no equipment from dusty bike to the new purchase ... After about 9 years so it was that time again ... New wheel - new speedometer. The mounted at Vorgängerrad Sigma tachometer performed his duty always to complete satisfaction and it would have been me not stolen by my own carelessness so I could also mention the model yet. So I ordered here on good terms as ever the BC 1609 STS, motivated by the "test" judgment and on wieged good Rezesionen. The product packaging is does not broadcast special value mentioned, but takes place in the evaluation not reflected because I want to bring the speedometer yes even on my bike for use. Then, this is the instructions you do not Bringer was here already often pointed. But that it is so bad, I would not have believed; useless is probably taken well. Only by the fact that I work in a craft and safely bring with a certain skill the successful installation is owed. It describes poorly imaged steps not at all possible in the model you purchased (cadence sensor mount / No) expelled or alternatives without these would be marked as such. After about 30 minutes but not accomplished. The seat of the socket on the handlebars is OK, but nothing more. The default rounding does not fit exactly, thus also the adhesive tape adheres only to a small area. The rubber band then brings even slightly improvement, fixed is simply different. The speedometer itself can be without difficulty but "screw" that is fair to mention. Perhaps also it is not very stuck the detent and so I wonder when this wear occurs (only suspected - have the power only since yesterday). The rubber for mounting the transferee at the fork goes with my bike out despite fork. Although is very tense and I will bring to security also prefer cable ties are used, but it works. Good also solved the attachment of the sensor on the spoke, "click" and good. Overall, the procedure and the appeal falls but the old fashion off - because the socket on the handle bar was screwed (and sitting still rock solid) and the sensor was smaller, the gums which better dimensioned (also still fixed) and the insertion of the speedometers in the holder the better solution. Functionally can then complain but little - the electronics meets your good service and shows a variety of features yet never overwhelming. The values appear realistic (temperature possibly a little too high) and also the operation while driving comes after a period of trying out well from the hand. Class also can be the lighting very on / off and is then activated in the former variant at every keystroke - thoughtful! Conclusion: For the Amazon price a good buy, the EIA would be the unit value to me. High among the employed with me (vorvorvor?) Before settling previous model, but with very good functionality. To premium product of the finishing touches to mount especially for the laity by obstacles missing. Three out of five points, with a tendency to the Fourth.