Polar S-Series Cadence Sensor

by Polar

Product Features

• Compatible with Polar S510, S520, 625x, S710, S710i, S720i, and S725

Product Description

A Polar accessory that measures the speed at which you turn the cranks of your bicycle (i.e. cadence), measured in revolutions per minute (rpm).

Product Details

• Shipping Weight: 3.2 ounces
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000GLRKLK
• Item model number: 890046
• Average Customer Review: 4.0 out of 5 stars  See all reviews (5 customer reviews)
• Amazon Best Sellers Rank: #198,828 in Sports & Outdoors (See Top 100 in Sports & Outdoors)

Customer Reviews

Most Helpful Customer Reviews

7 of 7 people found the following review helpful:

4.0 out of 5 stars Gets the job done, but big and ugly, October 14, 2004

By 

Douglas Welzel (Seattle, WA) - See all my reviews
(REAL NAME)   

I have no complaints about the functionality of the Polar cadence sensor, so I can't knock it too much. It has worked flawlessly for me. My only complaint is that it is downright ugly.

To pick up the magnet mounted on your crank arm, the cadence sensor needs to be mounted on your down tube at a strange angle -- about 45 degrees from vertical on my bike. The end result is something that looks like a growth on your shiny frame.

Oh well, don't let it stop you from purchasing it. As I said, it works great. No problems with interference, weather, etc.

4 of 4 people found the following review helpful:

5.0 out of 5 stars Cadence sensor review, October 2, 2005

By 

PJ (Ireland) - See all my reviews

This is a good piece of equipment and its well worth forking out an extra bit for if you are like me and cant afford to go for the power sensor. It allows you to keep an eye on your pedalling rate . Keeping it at around 90 rpm should see you get the maximum benifit from each session.

3 of 3 people found the following review helpful:

5.0 out of 5 stars Keeping pace with the Polar S-Series Cadence Sensor, April 18, 2008

By 

J. Riehle (Boston, MA) - See all my reviews
(REAL NAME)   

This review is from: Polar S-Series Cadence Sensor (Sports)

This is the fourth Polar S-Series Cadence Sensor that I've purchased. No, none have worn out, nor have there been any issues; it's just that the sensor is so good and helpful, that I've put one on each of my three bikes, and picked up this fourth one for when I travel and rent at my destination. In this case, Las Vegas. Having one to use strictly for travel may seem extravagant, but it serves me well for two points: (1) I don't have to keep snipping the zip ties on one bike, removing the sensor and the pedal magnet, then reattaching them when I'm back from my trip; and (2) If any of my other three sensors do break or run out of battery, I've got a handy replacement.

I've had no interference issues with this sensor, and no apparent drop-out, nor weird spikes that I sometime see with my heart rate and speed. The only downsides that I see with this sensor are: (1) The price - it seems to be about $5 to $10 more than *I* think it should; and (2) The declining availability; as Polar's moved to newer models of heart rate monitors, it's getting tougher to find the S-Series components.

In conclusion, if you've got an S-Series monitor, and are serious about your bike training, I highly recommend this sensor. It's been of great help to me, both on the road and when riding the trainer indoors with the Carmichael Training System videos.