Design Critique

Really in depth and high level feedback, thank you! I’ll explore more types of interactions like you said. But not sure why you’d need physical interactions beyond the basics…? volume, on/off, home, sync Bluetooth, shuffling music. Other than that everything could be voice right?

For use cases I’m specifically targeting features for on-the-go scenarios: activity tracking, GPS, ID card, NFC payment, RFID tag, keyless security, and connecting to bluetooth earbuds… what about calls/messaging, should that be left to your phone?