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Reviewed by 1 customer
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Comments about Sigma Sport Heart Rate Chest Strap/Trans:
Get this one as part of 2209STS MHR.
Once it start to work it is quite accurate.
The problem is that on start the sensor should be wet although the manual says it is not required.
If you put it dry the computer may think you don't use it at all and once you start sweat and the sensor became wet - computer already disconnected from it :(