no autonomy and not change the battery only ...

no autonomy and not change the battery only ...

Polar Transmitter T31C + elastic Black (Sports)
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Customer Review

I just bought this product for less than nine months and the battery is exhausted. Since we can not change it, change the sensor completely (about 33) is the 2em, I recommend buying Polar. There are many products on the market as good and much cheaper!

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