Changing the battery on a Garmin Dual Heart Rate Monitor - YouTube
Take off Garmin Heart Rate Monitor no Strap HRM3 | eBay
For GARMIN VIVOFIT JR.3 watch Battery HRM3-SS HRM-RU - AliExpress
REPLACEMENT SENSOR MODULE for Original Garmin HRM-RUN ANT+ Heart Rate Monitor £46.30 - PicClick UK
Garmin Vivofit Battery Clearance | rileyracing.nl
Garmin Vivofit Battery Clearance | rileyracing.nl
Garmin HRM 3-SS will connect/pair with forerunner 35 but will not show heart rate (see picture) - Accessories & Sensors - Running/Multisport - Garmin Forums