Easy to install, it was in a few minutes. After about 4-5 weeks were commanding first malfunction - Pedal revolutions were no longer measured and displayed (in my runtasticPro app). I inserted a new battery and the problem was solved - apparently. Because after a further 2 weeks put the Geschindigkeitsanzeige times and times the Pedalumdehungen were not displayed. Obviously here the Bluetooth unit directs has given up the ghost or anything else.
Now I tried to get through the adjustment more precise in the handle. Renewed battery change. In test mode, after that everything was satisfactory. At the next bike tour but then again none at the pedal rotations.
But now I had had enough of the part and have it returned.
Currently I use the "Wahoo Fitness Blue SC sensor", which I then bought here. Although both devices look almost the same, something has to be different in the latter. It works much better. Maybe because for the measurement of pedal rotations a wider magnet (which has to be drawn / fixed on the Tretgabel means of rubber) is genmutzt. This means that the device does not show quite as Justageproblematisch as 60beat. The Wahoo Anyway, I'm satisfied first. The 60beat I would not recommend for the above reasons.