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Amazon.com : SUUNTO Smart Heart Rate Belt: Superior Tracking of Heart Rate, Comfortable fit,Black : Sports & Outdoors
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Suunto Smart heart rate belt with long battery life for many different types of sport : Amazon.co.uk: Sports & Outdoors
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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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