Hi @Jaime., there is WearOS 3.5 in the watch and a built-in speaker, but music from Deezer can only be played to bluetooth headphones or an external speaker.I think, it's the same issue as @Rick.van.Dijk mentioned here:
Already have an account? Login
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
Sorry, we're still checking this file's contents to make sure it's safe to download. Please try again in a few minutes.
Sorry, our virus scanner detected that this file isn't safe to download.