https://youtu.be/VhFKKvKO6sU?si=-1kqYSPGAcwWcr6C
This will probably become a new form factor embraced by many people in the upcoming 5 years or so, if the tech advancements pull through.
Will it substitute our phones? Probably not. Nevertheless, it'll still end up being useful in some situations, especially combined with proper, fact-proof AI (instead of the current LLMs that we have).