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The CS100 has all of the bike-specific functionality of the CS100b, including a wireless speed sensor, an option to upgrade to a wireless cadence sensor, plus the ability to mount the system on either a handlebar or stem. What sets the CS100 apart, though, is that it comes standard as a full-on heart rate monitor. It comes with a Polar T31 coded chest strap, plus Polar's OwnCal, and OwnCode capabilities in order to give you an array of HR-specific data. You can easily review current, max, and average heart rate, calorie consumption, as well as customize training zones.

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Is the good for indoor cycling use?

Is the good for indoor cycling use?

I have the CS200CAD which is similar to the CS100. Unless you use roller for indoor cycling this computer is not ideal because the speed sensor can only be used on the front fork, it doesn't have the range to be on the back wheel. The heartrate monitor works great for indoor training but other functions are useless.