It's $30 from Garmin direct and since no other device uses that style and relatively few of these watches were sold, so there are no cheap clones?
A factory refurb Vivosmart4 is like $50 but the cable is $30? Seriously?
Has anyone found a $10 replacement anywhere in the world?
Or maybe some other watch model that is close enough so it works or can be made to work?
Garmin's page for reference: https://www.garmin.com/en-US/p/629181
Google search for reference: google.com/search
UPC: 753759213602