Hi @Curodin,
Thanks for your contact.
While we don't recommend using the Esim cards on devices that are not phones, since we can't guarantee it would work correctly, that possibility could technically work, as long as your smartwatch is able to recognize our eSim cards and you're able to correctly set it up. But we must remind you that the Duo Multi-SIM solution only works with one equipment on at a time, so everytime you want to use your watch, you would have to turn off your phone, and everytime you want to use your phone, you would have to turn off your smartwatch.
Thanks,
Mayon_Vodafone