Both cadence and speed actually worked on first set-up without tweaking anything.
Directions are thorough/clear but all of the set-up steps take patience.
I bought 2 of these. I have a Trek SOHO (no problem at all with set-up). I also have a StreetStrider elliptical bike which was more of a challenge. The unit did accommodate the 20 x 1-3/8 rear tire size in the wheel-size adjustment.
This unit has ONE transmitter with separate sensors for the rear wheel (speed) and cadence (left crank arm). There is adjustment on this piece but it takes some finesse to get both speed and cadence magnets to line-up with their respective sensor targets.
Overall, light enough for me and the wireless feature is seamless.
I like not only that it provides me with my current speed and distance but also average speed. Having it measure the cadence is something new for me but I like how that prints a clearer picture of my pace. Installing the sensor is quite simple and it's easy to tweak it to make the necessary adjustments. THe functionality is second to none.
First day setup was hard only because the battery in the sensor unit arrived dead. With new batteries (and so a functioning sensor) in hand, installation took about 10 minutes. Much quicker than taping the wires in a wired unit. Seems to work great. Readout unit fits a bit loose and so it rattles; will fix with tiny bits of electrical tape. We'll see how battery life goes.
This is an excellent product. It is easy to set up, made of great quality and has a phenomenal price tag. Does the necessary job whether you're an amateur rider or a pro looking to keep track of your stats.
I’ve had good luck with this bike computer that is no longer being made that I wanted another. This one was in excellent condition and I’m happy with it.