Hi ​@Mandar B,

is that device actually supposed to work with Strava? I was looking at https://www.boat-lifestyle.com but haven't found a single mention of Strava. But maybe it's too new / not known yet..?

Anyway - general instructions for various devices and operating systems are here:

https://support.strava.com/hc/en-us/articles/223297187-How-to-get-your-Activities-to-Strava

If the article doesn't help, please add any details about what's failing, what exact errors you see etc. Also, it would help if you can post a link to any documentation from that watch manufacturer that could include some relevant information. Thank you!