how to retrieve data from apple watch series 6

I'm developing an app that track user's location and vital signs from apple watch, my question is how can I contact apple watch to my iOS app I'm using series 6
where can I get the required information or what I should search for


Thanks
You can use the WatchConnectivity framework for iPhone <-> Apple Watch communication. https://developer.apple.com/documentation/watchconnectivity
how to retrieve data from apple watch series 6
 
 
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