COOSPO Cadence & Speed Sensor for Cycling, Wireless Bluetooth & ANT+ Bike RPM Sensor for Cycling Computers, Compatible with IP67 / Rouvy / Zwift / Peloton / Wahoo / CooSporide

Followup to followup review----I reached out to the mfg about the broken ear causing the sensor to fall off, and preventing it from being mounted. After verifying that I mounted it correctly, they quickly send me a replacement. I wrapped the sensor with electrical tape just to be safe. Looking at the sensor after roughly one week, I can see the silicone band snapped under the tape. So there is definitely some weakness with the band, as this is the second one that broke.Followup review----On one of my ride, I glanced down and saw my cadence being blank and noticed the sensor not there anymore. I saved and replayed my ride to see where the cadence stopped, rode back 3 miles and found the sensor Turns out the one of the ears where the silicone band hooks onto broke off, just as I had concern about.I went back a couple of days later and found the rubber backing along with a fragment of the silicone bend. So now I am not sure if the broken ear or band that caused the sensor to fall off. Now I have to wrap it with tape after mounting so it doesn't come off.After less than 500 miles, that's pretty fragile. It might be the reason I lost the original one. Dropping from 5 stars to 3.One thing I also noticed is the cadence update is a few seconds behind, so if you mount this on your stationary bike and want to see your peak cadence, you are not going to get that.Original review----This is a replacement for my last Coospo sensor that fell off my crank. The replacment works fine as expected. I do like the fact it has ANT+ and BLE, so it could send data to my bike computer and phone at the same time. Weird that a 2 pack cost more than 2 single pack, which is what I purchased. I read you can't pair both at the same time via BLE, but I using another brand's speed sensor, which is no problem.A couple of minor issues. The form factor is squarish, which makes it stick out when attached to a hub or to my old school crank. This time, I mounted in between the spider on the chainring side so nothing would bump into it (unless a dropped chain does). The other thing is removing the battery to change between cadence and speed sensor mode. I've had others where there is a tiny switch internally. By the time the battery needs to be changed, I would have forgotten if the blue or red light indicates it being in cadence mode. I would find out there is no cadence reading, then have to go into the app or bike computer to see what type of device is discovered. Probably have to stuff the instruction into somewhere obvious, which I would not remember 8 months down the line.

The units are quickly recognized by iOS and Android. Wahoo also recognizes the devices. They are initially “seen” as cadence/speed. Android and Wahoo identify the Ant+ signal and the setting of cadence OR speed that is set when placing/replacing the battery as directed in the manual. I found it easiest to pair one at a time with the other “asleep”. Pairing the speed first was the easiest way to keep the sensor asleep while pairing the cadence, but the pairing can be done in any order before installing. Just remember or mark them to distinguish as they appear identical. iOS will pair with both, but in use will only recognize one or the other. The ble id does not allow me to use both at the same time. I attempted to pair them as one does for multiple earphones, but got wildly inaccurate data.There is a delay in the slope data for climbs and it varies based on ascent bs descent. The speed is accurate or the distance of a ride (avg), but may vary +\- 0.5 mph for the current velocity (compared between android phone, wahoo ELEMNT, and wheel mount magnet with measured circ.Overall a good value for money that offers decent accuracy with some tolerance for error. Issues with pairing are primarily due to lack of any+ on the iOS and the dual ble signal of the units.

UPDATE: I've been using these sensors for several months now and just raced the SERC #3 race in Bryson City 1-14-2019. Weather was a mess and the tracks was all mud as it poured rain on us through the entire event. The sensors worked flawlessly and took the punishment of the mud and grime, including being completely submerged.I ride XC and some Enduro, putting about 3000 miles a year on my equipment. I was attracted to these because they were self contained FOB style at a very nice price point. Therefore, I purchased 2 of these sensors, one for cadence and the other for wheel speed. Currently I run them connected to a Lezyne cycling computer. However, for purposes of this review, I took the time to connect directly to an iPhone 6 and verified connectivity with both Wahoo and Strava (see attached pictures).The product comes in a sturdy, retail box with nice packaging. It includes the sensor, 2 large bands, 2 smaller bands and 2 mounting pads. Instructions are also included and have an English version that is easy to understand. The included bands are thicker in diameter than some of the others I have seen with Garmin and other devices, which is nice as I believe they will hold up better. I would estimate the thickness to be about 3.5 ml vs the 1.5~2 ml ones from other manufacturers. There are 2 rubber mounting pads, each are a different style. One is flat and the other concave. The flat one is used for mounting on a crank arm, the curved for your wheel hub. Installation is a snap, however, if you have a small J hook or similar dentistry tool, it will make installing the retaining bands a little easier. Remember, tight is good as you don't want them to move once installed. The mounting hooks on the sensor have a split in the middle, and it's the correct width for a small zip-tie. Although the bands look like they will do the job, I've added the extra security of a zip-tie. Being a mountain biker, I have been known to knock magnet sensors off my cranks that were secured by only bands.Setup: This is pretty straight forward. You will need to open the battery door with a coin or key and remove a plastic film which keeps the battery from making contact. When you reinstall the battery, you will want to do it with the top of the sensor facing you to see the light, as it doesn't stay on for very long. The color of the light is how you determine what mode it is in (speed or cadence). To toggle modes, simply remove and reinstall the battery. No buttons or complicated setup required, that's it.Pairing:First I paired to my Lezyne computer, which recognized them immediately. Once I had them connected, both icons were visible on the main screen. (see attached images). Also, in my images you will see 2 shots of the computer, one showing a speed reading, and the other a cadence reading. I tumbled each separately in my hand to confirm transmission.Next, I opened Strava on my iPhone 6 and paired from the Strava sensors page. Cadence mode will connect either individually under 'Cadence' or as cadence under 'Speed & Cadence' (see screen shots). However, speed mode will not connect. NOTE :: THIS IS A STRAVA ISSUE. You can go to the support threads on Strava's website and see plenty of discussions on the speed sensor issue. I do not know why Strava will not fix this issue, but using the Strava iPhone app with a speed sensor doesn't work. I posted a workaround for this on the support thread, but the long of the short is to use WaHoo or other app for recording and then share it to your Strava account. It's inconvenient, as you have 1 extra step, but it works.For Wahoo app on the iPhone, setup was a snap. A really nice thing about wahoo, is it will display the broadcast serial number for the sensor which is also printed on the back of each sensor. In the event you pull them off your bike for cleaning and mix them up, Wahoo will help you identify which is which (see screen shots).Durability:I have not had these sensors long, but they do appear to be well built and the battery door has a nice water and dust proof seal. I will only update this post if there are issues with durability.My Thoughts:If you are looking for a good set of sensors that are small, self contained and do not require magnets, at are really good price point, I would highly recommend trying a pair of these, it really seems an obvious purchase choice.My thoughts on CooSpo - I originally came across this company 3 years ago on aliexpress. I have purchased several of ther HRM chest straps and 2 Cadence/Speed combination units. I've never had any issues and I've only replaced units that I lost, or I damaged from severe off road riding. Their previous products have lived up beyond my expectations and I have high hopes for these newer models.

Bought the 2 pack but received only one. Contacted Amazon and was sent the other one. Other than that this is a great product for my Wahoo Roam. $30 for two sensors when the Wahoo ones are around $100. And they are working fantastic. Can't complain about this product.