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The COOSPO BK805 is a 2-in-1 wireless cadence and speed sensor designed for cyclists seeking precise real-time data. Featuring dual Bluetooth and ANT+ connectivity, it pairs effortlessly with popular fitness apps like Rouvy, Peloton, and Wahoo. Its adjustable mounting fits most bike frames, while the IP67 waterproof rating and 500-hour battery life ensure durability and long-term use in all conditions.








| ASIN | B0936PWZ7J |
| Battery Average Life | 500 hours |
| Battery Cell Composition | Lithium Ion |
| Battery Life | 500 hours |
| Battery Type | Lithium Ion |
| Best Sellers Rank | #51,397 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #40 in Cycling Computers |
| Brand | CooSpo |
| Brand Name | CooSpo |
| Color | Black |
| Connectivity Technology | ANT, Bluetooth |
| Customer Reviews | 4.0 out of 5 stars 364 Reviews |
| Human Interface Input | Buttons |
| Included Components | COOSPO Cadence Speed Sensor*1, Mounting Accessories, Sensor Magnet *1, User Manual |
| International Protection Rating | IP67 |
| Item Weight | 50 g |
| Manufacturer | COOSPO |
| Model Number | BK805 Bike cadence speed sensor |
| Mounting Type | Handlebar Mount |
| Sensor Type | Bluetooth ANT COOSPO Cadence Speed Sensor |
A**N
perfect choice to be install on the back wheel of a mountain bike
I feel like this speed sensor deserves some kudos simply because it is very difficult to find a cyclometer for your bike that can be installed on the rear wheel and that works well. I have a 26" mountain bike that I typically take for a spin thru the year or use for exercising, however during very hot days or even raining or cold days I like to mount my bike on a stationary/ training tool and pedal in place and want to track my speed and pedaled miles. Every speedometer I looked into works well if is on the front wheel because that is the one that typically moves, or most of the new ones now come with GPS tracking which does not work if I'm using the bike in place. Long story short, this speed sensor works and functions well. It comes with 3 pieces, 1 piece goes on the back frame of your wheel, the other piece on the spoke, and one piece goes on the pedal area. The sensor connects easy via bluetooth to the app suggested on the site or the manual (I use the wahoo app and works great). The manual could use small improvements as it is a bit hard to follow. For me the hardest part was to install it correctly, it does take a bit of practice and trial and error a few times. Once you got where it needs to go, you use the zip ties they provide. They also provided a small allen wrench, which I have no clue where it goes as it is not needed. The piece that goes on the frame (the sensor), has a small arm which you can bend back and forth to make it closer to the magnet on the spoke to establish connection. It is easy to know if the pedal piece and the magnet are in range or lined up because the sensor has 2 small lights, a blue and green and as you move the wheel to test, you see the blue light go on, and the pedal when used and the magnet from it gets in range of the sensor, the sensor's green light goes off. Every sensor I have seen requires the sensor and magnet to be within 2-5 millimeters apart, well no issue with this sensor you just bend the small sensor arm as much as needed to be in range. far as battery life, too soon to know as I just got this and have been using for a few weeks, but uses a CR 2032 on the sensor. I would buy this over and over again because it has a very good price compared to all the other cyclometers that can range anywhere from 30-100's of dollars with wireless sensors, and GPS tracking, that mostly work on front wheel only, where this is small, simple and works with stationary bikes and super cheep.
Y**E
Works great no issues no wires
I’ve had this for almost a year now and have one installed on both my hybrid and road bikes. I love it! It has stayed secure for many rides(bumps included) and nothing has fallen off. Setup was easy and I was easily able to pair it with my Cycplus bike computer, which was the brand of my previous and first sensor set(it all came in a bundled kit). The Cycplus sensors were a disaster as they only attached by bands which broke after one or two uses and even rubber and silicone bands didn’t work. They fell off all of the time and I was always wasting precious riding time having to find where the stupid thing fell off and then get a fresh band and reattach it. It was a huge hassle and that’s what prompted me to look for something else and I came across this COOSPO sensor. I wish I had got COOSPO to begin with. It seems pretty accurate as far as I can tell, as it closely matches what my smart watch says. Being this is only the second sensor set I’ve ever used, I can’t draw any comparisons with more expensive sensors or more high-tech models, but the price cannot be beat for this and it works for it’s intended purpose plain and simple.
M**B
Good budget replacement for Wahoo
This is a decent budget replacement for the 'Blue SC' speed + cadence sensor from Wahoo and the mounting is slightly more secure on the chainstay of the bike but my one quibble is that the Ant+ connection to my Wahoo bolt isn't as consistent as the Blue SC. It drops out sometimes or gives inaccurate cadence readings but this doesn't happen frequently enough to become an issue. just a minor irritation but for true data geeks out there this may be a deal breaker.
K**G
Quality, durable product… Easy to connect!
Worked out of the box! Easy mountain, just followed the instructions and everything fit and was easy to set up and use. Has great accuracy so far, looks like it's very well made so it should be adorable product as well. Set up was particularly easy just follow those instructions and you shouldn't have any problem with it. I love this product. I absolutely love the feel of it. I love the functionality of it, the functionality, it was easy to mount and and feels like a durable products as well as having a great price.
P**D
Loses cadence, useless to me
Cadence kept dropping out after about 10 min. I would have to pull the battery to reset it. The pick-up was as close to the wheel magnet as possible without touching. Battery showed 100% but I tried another just in case. Did not fix. Speed would work but if it went to sleep, I would have to unpair and repair through the app- so basically every time I took the bike out after leaving it overnight. This device is useless without cadence. The app works fine and is easy to read. Will be returning. I might try a replacement.
R**R
Excellent in function and compatbilty
I had a more expensive Wahoo Speed and Cadence sensor that I used with my IOS Cyclemeter app. It quit working after about 7 or 8 years of use (so I got my money’s worth). This item is significantly less expense, fits perfectly on my bike (perhaps better than the Wahoo) and worked right out of the box with my preferred bike app. Well worth it; happy wirh the purchase.
M**Z
Not good for a fatbike
I tried using this on a fatbike, which did not work very well. The thing to keep in mind here is that you have THREE magnetic things, strapped to your bike in 3 places by zip ties that may not be possible to get tight and 100% flush, and if any one of those things does not perfectly align, you'll lose readings. So in my case, yesterday's ride clocked ZERO miles. Not great. The CoospoRide app doesn't even fallback to GPS in the event the sensor drops! There is very little margin for error here. If your crank magnet shifts a bit as you ride - it will drop. Maybe on a different bike it's possible to get these 3 things reliably aligned, and somehow get those to stay in place during a long and bumpy ride. But the CoospoRide app is particularly weak, offering no way to adjust anything that isn't picked up correctly - and doesn't even connect to things like RunGap, or have tracking for anything *but* biking (I have the Coospo HR band and it works great with the Polar app, Strava, etc). Overall while I'd like to have speed/cadence for me this system is not going to work, and I wonder why they didn't make it a little more forgiving in terms of the alignment, or offer a better way to secure things than those straps. Velcro strips would probably work better, at least that would keep it in place.
G**Y
Won't work on most bikes
This might work on certain bikes but I tried it on two and couldn't make it work. The cadence magnet has to be extremely close to the sensor. They say 1.2 mm but I couldn't make it work even that close. None if my bikes have a distance from crank arm to chain stay that tight.
D**A
Eficiente
Equipamento de fácil instalação e operação, funcionando muito bem até agora
A**N
Reliable. Very affordable.
I've been using this cycling speed and cadence sensor for over 100 km, and overall, it’s a solid performer with some room for improvement. Installation & Setup: Installing the sensors was straightforward and took less than 15 minutes, thanks to the tools and zip ties included in the box. I was initially skeptical about the locking mechanism of the speed sensor on the spoke, but it has held up well so far, even on bumpy roads. Pairing the device with my Wahoo Element Roam via ANT+ was effortless, which added to the positive experience during setup. Performance: Once paired, the sensors provided accurate and consistent data, enhancing my cycling experience. The cadence sensor was particularly helpful in fine-tuning my pedaling rhythm. However, I struggled to connect the sensors via Bluetooth, which was disappointing as I wanted to use the device with multiple apps and devices. Build Quality & Design: The sensors are lightweight and unobtrusive, making them ideal for long rides. They also feel durable and seem well-made, though time will tell how they fare under extended use. Pros: Easy installation with all necessary tools included. Reliable ANT+ connectivity with my cycling computer. Secure locking mechanism for the speed sensor. Compact and lightweight design. Cons: Bluetooth connectivity issues remain unresolved. The locking mechanism might need a confidence boost initially. Final Thoughts: This sensor is a great choice for cyclists who primarily use ANT+ connectivity and appreciate a quick, easy setup process. However, if Bluetooth is a must for your setup, you may want to look for alternative options or ensure troubleshooting steps are in place. Rating: 4/5
K**L
Cadence stopped working within a week
I bought this speed and cadence sensors. At first both sensors were working fine. But within a week the cadence sensor has stopped working. Tried resetting it but to no avail. Unable to reach the company for fixing now that the return period is over. NOT RECOMMENDED AT ALL.
A**N
Don’t waste ur money on this junk
Worst unreliable sensors . Don’t ever buy anything magnet based .
Trustpilot
4 days ago
1 month ago