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Need a Battery for your Polar watch or transmitter? Please note that Polar T31 or T61 transmitters do not have a user replaceable battery. We recommend replacing those transmitters with the following: T31 Non Coded T31 Coded H1 Transmitter H7 Transmitter Polar H10 Transmitter
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🇺🇸 Ship from USA · On Agora since 2025
$1.97