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Garmin Soft Strap w/ Electrodes for Premium Heart Rate Monitor
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GARMIN FENIX 3 MULTI-SPORT TRAINING GPS WATCH, HRM-RUN BUNDLE 010-01338-11 NEW 753759131708 | eBay
Garmin HRM 3-SS will connect/pair with forerunner 35 but will not show heart rate (see picture) - Accessories & Sensors - Running/Multisport - Garmin Forums
Garmin HRM3-SS Heart Rate Strap ANT+ | The Pro's Closet