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What tool do I need to change the battery in my HRM? I can't find anything that fits, is it a teeny hex key? Thanks! : r/Suunto
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Battery Kit for Suunto HR Transmitter Belt & Bike POD, ANT & Dual Comfort Belt - DiveSummit.comDiveSummit.com
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Amazon.com: Suunto 9 Multisport GPS Watch with BARO and Wrist-Based Heart Rate (White with HR Belt) : Electronics
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