Wahoo RPM Cycling Cadence Sensor for Outdoor, Spin and Stationary Bikes, Blue

Options for attachment work just fine, settled for the offside crank arm. Appears to be perfectly accurate and there's no trouble interfacing it to either Wahoo Fitness or Locus Maps. It appears you can only link it to one app at a time.It's not difficult to get access to the battery to replace it, the holder pops open with the twist of a coin in a slot on the side.The silicone rubber holder that I'd have thought would have been ideal needs to be mounted in such a way that the cable ties used to secure it would have to be removed to remove it from the holder. Which doesn't make a lot of sense to me...Apart from that, the only other gripe was that the supplied battery was at 25% on first use. But then the thing activates on movement, so I'd imagine it must have been activating on and off all the way through the delivery from the warehouse. Might be an idea to have the battery separate or insulated in the device.Incredible that they've got the sensor, BT/LE, and microcontroller all tucked away in such a small case...

Unpacked and paired straight away, attached to my cycling shoes which means I only need one sensor having more than one bike, pairs with my bike computer every time tried other cheaper cadence devices with limited success. Some times it's worth paying a bit more

Used with: Garmin Edge 1030This little gadget works perfectly. It was easy to fit using the double-sided tape supplied, since I have cranks with flat inside surfaces. In case you have cranks with curved surfaces, the unit comes with a snug little holder which zip-ties to the crank. It synced to my Garmin immediately, it starts up quickly and automatically, and it just works, every time. Cadence readings appear to be as accurate as you could hope for - there's often a delay of a couple of seconds before the reading changes in response to a change in cadence, but this could be the Garmin doing a time-averaging thing - it's not easy to update a display rapidly when measuring something that's only turning at little more than one rev per second. The big news for me is that so far, after using it for around 10 hours of riding, I haven't seen a single drop-out.It's certainly infinitely better than the Magene sensor I bought originally, and which went into the scrap bin after a couple of rides due to continual signal drop-outs. If you're wondering which of these sensors to buy, I'd recommend you buy this Wahoo sensor - don't waste your money on the Magene.I would have given this unit five stars, but I have to knock off one star because of the very soft plastic the sensor is made of - when the time comes to change the battery I think it's going to be difficult to prise open the battery compartment without causing some serious damage. Well, we'll see when the time comes, in the meantime I'm very pleased with it.EDIT: I've just bought a second unit for one of my other bikes, and it arrived with a dead battery. The manufacturer stupidly ships these units with the battery already installed and connected, so every time the unit moves while in transit, it gets activated. The first one I bought was ok, not so the second one.So as I had to change the battery, I was forced to find a tool to prise the unit open without damaging it. The only thing I can find to do the job is a ball-link plier used for separating the links used in RC planes, such as this one: https://www.amazon.co.uk/ATATMOUNT-Metal-Oblique-Helicopter-Repair/dp/B08NJR2WKS. I have two on hand and they do the job. If you don't happen to have one lying around though, it's pretty annoying to have to spend a tenner for a tool just to change the battery.

This has been on my bike for a month and it's worked perfectly. It's paired instantly with both my phone and my Elemnt Bolt. I used the neoprene mount and supplied zip ties to attach it to my crank, which is a little ugly but avoids the worry of the double-sided tape falling off. You really don't have to think about the sensor: just get on the bike, start your GPS tracker and go. Everything's completely automatic. The readings it's given have been plausible and consistent.My only criticism is that the supplied "Quick Star Guide" is completely inadequate and I had to go to Wahoo's website for proper instructions on how to mount and pair the device. (This seems to be a consistent failing with Wahoo's products.) But, hey, you mount it once and then it just works.

Be aware that this only works with certain Garmin Edge devices (check the "thisisant" website for compatibility with your device), not all will accept a cadence only sensor. I have a Garmin 500 and this does pick up the cadence sensor just fine. I had a combined speed/cadence sensor that sits on the chainstay before I got this and although I liked it, I'd lost the speed magnet off the wheel and I never liked having all that stuff strapped to the bike. With the RPM I have the choice of attach this to the crank via sticky pads or zip ties, OR to my shoe (like those footpods). I went for the latter, which means there is nothing attached to my bike to clutter it up and attract dirt, it also means the sensor works on all my bikes as I just attach it to whichever shoes I'm wearing (5 second job), it even means I could use it on a stationary bike in a gym (but why would I when I have a real bike and real roads to ride on?)Overall I'm pleased with it, it doesn't tend to sense slower cadence (i.e. less than 40rpm) that well, but on the whole it appears to work just as well as my old ant+ sensor that relied on a magnet. I could have gone for the Garmin version of this, but felt this was better as it supports Bluetooth, so hopefully is a little more future proof and will work with a wider range of devices (including connecting to my phone).

Ordered a used one prior to this new package and I should have just ordered it new and not wasted the time. The used one was missing items.Anyway, the only downside of this product is replacing the battery can be fiddly, the cap is fiddly to take off and easier said than done.Otherwise, it paired very easily and quickly and no faults so far.