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Wahoo Blue SC Cycling Speed Sensor for Road, Gravel and Mountain Bikes

4.2 4.2 out of 5 stars 1,935 ratings

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Brand Wahoo Fitness
Color Blue
Item Weight 0.1 Kilograms
Battery Life 48 Hours
Sensor Type Speed Sensor, Cadence Sensor, GPS Sensor

About this item

  • SPEED / CADENCE MEASUREMENT - Track and capture real-time cycling speed and cadence with compatible training apps, including Wahoo SYSTM & RGT, Zwift, and Peloton Digital iOS App via Bluetooth.
  • CYCLING CADENCE - The number of revolutions per minute (RPM) you complete at a given speed. By learning how to increase and train your cycling cadence, or the rate at which you pedal, you’ll improve your cycling efficiency and allow yourself to pedal for longer, faster.
  • DUAL BAND TECHNOLOGY - Integrated with ANT+ and Bluetooth Smart capabilities, Wahoo’s BLUE SC Speed & Cadence sensors connect to smartphones, tablets, and bike computers.
  • UNIVERSAL FIT - Works with most bikes and frame sizes. Rubber band and zip tie mounts included.
  • REPLACEABLE BATTERY - CR2023 replaceable coin cell battery lasts up to 12 months, no recharging is necessary.

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From the manufacturer

Accurate Speed and Cadence Data

Track and capture real time cycling speed and cadence data on your iPhone, Android or Bike Computer.

Universal Fit

Blue SC works with most bikes and frame sizes. Rubber band and zip tie mounts included.

100% Wireless

No more tangled wires! Bluetooth and ANT+ capabilities allow for wireless connection to both smartphones and bike computers.

Sleek, Lightweight Design

Sensors weigh only 36 grams. Perfect for spin class or use with multiple bikes.

Replaceable Battery

CR2032 replaceable coin cell battery. Lasts up to 12 months. No recharging.

Third Party Apps

Send data to your favorite cycling apps - Wahoo Fitness , Strava, RideWithGPS, MapMyRide, Cyclemeter, and more.

Customer Reviews
Bluetooth Smart & ANT+
Third Party App Compatible
Speed Measurement
Cadence Measurement
Bike Mount
Shoe Mount
Magnetless
Waterproof
Universal Fit
Replaceable Battery

Product Description

WIRELESS BLUETOOTH AND ANT+ CYCLING SPEED / CADENCE SENSORS - All you need forcycling data, all together at once. The Wahoo BlueSC Speed and Cadence Sensors transform your phone into a powerful cycling computer. Using Bluetooth Smart and ANT+ technology, track cycling speed, cadence, and distance whiled paired to a favorite cycling app / bike computer. It's weatherproof, small with a low drag profile, and comes with rubber band and zip tie mounts.

Product information

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Wahoo

Wahoo Blue SC Cycling Speed Sensor for Road, Gravel and Mountain Bikes


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Customer reviews

4.2 out of 5 stars
4.2 out of 5
1,935 global ratings

Customers say

Customers are disappointed with the speed of the cycling computer. They disagree on performance, ease of setup, connectivity, quality, value, and data.

AI-generated from the text of customer reviews

300 customers mention202 positive98 negative

Customers are mixed about the performance of the cycling computer. Some mention that it works pretty good, while others say that the cadence feature stopped working. The app is free and has a simple function, but some customers say that it doesn't offer full functionality.

"...Review from when I first got it:Works pretty well, but is sensitive to slight changes in the mounting alignment, and the cable ties..." Read more

"Works fine once I got it installed. Installation was about 15-20 minutes and was pretty easy...." Read more

"...was supported when I had to remove my wheel and the device was knocked out of alignment...." Read more

"...Speed sensor continued to work fine. Thought it was the battery. Changed the battery, spun the pedals and lights lit up, cadence counted, etc...." Read more

148 customers mention98 positive50 negative

Customers are mixed about the ease of setup. Some mention that it's super easy to install, with clear instructions. However, others say that it can be challenging to figure out for yourself set up due to no included instructions.

"...Installation was about 15-20 minutes and was pretty easy. I put the magnet on the spoke and aligned it to go by the middle of the arm...." Read more

"Arrived in new package, all parts in box. Mounted easily...." Read more

"...Also,it didn't include any installation instructions...." Read more

"was sort of easy to install, but i thought the the rubber band that wraps around the chain stay to hold the device in place on the bike a..." Read more

97 customers mention55 positive42 negative

Customers are mixed about the connectivity of the cycling computer. Some mention that it pairs with the Garmin quickly and has no issues, while others say that it wouldn't pair with its own app and that the pairing can get confused.

"Update: After 4 years, I finally had to change the battery. It was a quick and easy replacement...." Read more

"...app - if you don't leave it running in the foreground, it can stop recording your session...." Read more

"...Was able to pair with no trouble...." Read more

"...- I learned that pairing can get confused and the sensor unit needed to be reset to swap from an iPad to an iPhone...." Read more

54 customers mention35 positive19 negative

Customers are mixed about the quality of the cycling computer. Some mention it's extremely reliable, well made, and accurate, while others say that it fell apart just as quickly, seems too vulnerable, and broke from vibrations.

"...Product -The Wahoo Blue SC is a great product with a great reputation (nearly every other cyclist I ride with has one)...." Read more

"...It seems too vulnerable especially with that cadence sensor being so touchy." Read more

"Pros: It is easy to install, seems secure, and works wellCons: Setup is a little finicky and took longer than it should...." Read more

"...Specialized Tarmac, syncs perfectly with my iPhone 6, has survived over 300 miles and an triathlon...." Read more

53 customers mention26 positive27 negative

Customers are mixed about the value of the cycling computer. Some mention it's good for the price, versatile, and has a great sensor. However, others say that it'd be a waste of time and money.

"...This device is very disappointing and doesn't provide info as easily as a Cateye Strada...." Read more

"...Plus, less expensive.Some people complain their feet knock the sensor out of place while riding. I've very rarely had that problem...." Read more

"...a cadence at 95 or above is very common for me, so this product is worthless and frustrating for me...." Read more

"...New battery is not so expensive and no telling how long the old one was sitting on the shelf...." Read more

48 customers mention25 positive23 negative

Customers are mixed about the data from the cycling computer. Some mention that it's a great sensor that appears to track cadence and distance accurately, while others say that the readings and sensors are not very accurate. The app the device paired with would not show any sensor data, and the sensor has to be so close to the device that it makes its function.

"...app works just fine for what it is, and the sensor appears to track cadence and distance accurately...." Read more

"...cadence sensor to where it was just a hair away from the crank, still no data. Tried calling customer service today and had to leave a voice mail...." Read more

"...This is the only solution I found on the market.2. Diagnostics app is pretty good idea but I would have some suggestions for improvements if..." Read more

"...is (Specialized Tarmac Comp) then you will have a problem getting within the recommended range of both the magnet on the spoke and the magnet on..." Read more

40 customers mention0 positive40 negative

Customers are dissatisfied with the speed of the cycling computer. They mention that it often has issues with speed, cadence, or both bobbling. They also say there is a measurable lag when using with Zwift. Additionally, some customers report that the speed reading would randomly stop working and they had to re-adjust. The product is also a little slow during the first pairing and syncs up quickly in subsequent use. However, some users report that at times the app simply stops recording any one of speed, camden, or distance.

"...It didn't detect speed until I moved the magnet away from center and more towards the tip. Now it works perfectly...." Read more

"...Went to ride on trainer this morning and no data. No speed, no cadence, nothing...." Read more

"...Looks kind of ridiculous.Speed reading would randomly stop working and I had to re-adjust even though I'm centered almost touching...." Read more

"...on your spokes, any upset of the sensor causes it to lose the ability to sense rpm...." Read more

Set this up in a spin bike
4 Stars
Set this up in a spin bike
I added this to a Spinner NXT Bike and it reports the RPM to an iPad Pro 9.7-inch (128GB, Wi-Fi, Space Gray) 2016 Model accurately and quickly. Combined with a Wahoo Fitness Run/Gym Heart Rate Monitor for iPhone 4/4S I get everything I need for an at-home spinning class.Some caveats: - The button magnet was attached to the inside of the spin bike's wheel by drilling a 2.5mm hole and tapping it with a 3mm X 0.6 pitch threading tap (3mm x .6 High Speed Steel Plug Tap (PACK OF 2)) and then measuring the distance from the center of the axil to the hole drilled. Multiply that by 2 and then multiply the result by Pi. For example the hole I drilled is at the inner edge between the silver strip and the black field in the decal. That was (for me) exactly 7" from the center of the axis. So 7*2*3.14159 = 43.982297 or a wheel circumference of 44 inches. Put that into the app you use as a custom wheel size to get accurate MPH or KPH readings. If you don't feel comfortable with the drilling and tapping I'm pretty sure you can just duct tape a small magnet like Zafos 25pcs Cylinder Magnets Round Magnets for Arts Crafts Hobbies and Office Organization.Bonus E-Magnetic Worksheet onto the wheel which should last a while. - On this spinning bike, the pedal armature does not get in close enough proximity to the body of the sensor for the cadence sensor to pick up a magnet attached to the pedal. However I find the RPM/MPH (KPH) to be sufficient as the spinning bike is a fixed peddle to RPM ratio. - I added a triangular block of wood attached with velcro to the system so I could easily service the unit which came in handy for pairing (below) and that the sensor arm was closer to perpendicular to the travel of the wheel magnet. I was concerned that if the magnet traveled in an obtuse angle to the sensor, it might not trigger correctly. - I learned that pairing can get confused and the sensor unit needed to be reset to swap from an iPad to an iPhone. This was likely because I had neglected to turn off Bluetooth on the previously paired device (or moved it far enough out of range) and therefore the new device could not "find" the sensor to pair with. To reset the sensor, you need to insert the battery BACKWARDS for 3 seconds. It is not enough to just pull the battery out for a few seconds. Once I started remembering to take the step of turning off Bluetooth on the device(s) I'm not using, paring with multiple devices has not been a problem. - A CableJive dockStubz+ Charge Converter and 30-pin Pass Through Adapter for iPhone, iPod, and iPad and a Apple Lightning to 30-Pin Adapter (MD823AM/A) theoretically allows you to charge the iPad while cycling. However the whole stack of dongles makes me feel like a small bump will permanently damage the lightning connector. So I just put the ANT+ dongle in and run on battery.
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Top reviews from the United States

Reviewed in the United States on September 10, 2016
2 people found this helpful
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Reviewed in the United States on January 15, 2017
4 people found this helpful
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Reviewed in the United States on June 10, 2016
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Top reviews from other countries

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Karlchen
5.0 out of 5 stars Wahoo halt
Reviewed in Germany on June 27, 2023
Alex
5.0 out of 5 stars Buen producto
Reviewed in Mexico on August 11, 2020
Anton Kovalchuk
5.0 out of 5 stars Great product!
Reviewed in Canada on December 2, 2016
One person found this helpful
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Cristiano Bertola
5.0 out of 5 stars Prezzo non molto economico ma è un buon sensore.
Reviewed in Italy on July 3, 2018
Pugling Lee
5.0 out of 5 stars Stopped working after 11 months
Reviewed in Singapore on March 2, 2022