Polar FT40 Heart Rate Monitor
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![Changing Batteries - Polar Electro FT40 User Manual [Page 30] | ManualsLib](https://static-data2.manualslib.com/product-images/14/1313/131292/raw.jpg "Changing Batteries - Polar Electro FT40 User Manual [Page 30] | ManualsLib")
Changing Batteries - Polar Electro FT40 User Manual [Page 30] | ManualsLib
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