Vivosmart 4 will not sync - Garmin Connect Mobile Android - Mobile Apps & Web - Garmin Forums
Garmin Vivosmart 5 Review | PCMag
How to fix Garmin Vivosmart 4 that's not syncing properly
Amazon.com: for Garmin Vivosmart 4 USB Charging Cable, LOKEKE Replacement USB Charger Charging Cables for Garmin Vivosmart 4 Sync Date Cable : Electronics