[gegtik]

I'll be honest, after seeing a nightmare situation where a smartring battery inflated and cut off circulation to a finger, I will never ever buy a ring with a battery in it.

[Daneel_]

I’d be interested to see a battery-less ring that uses the mechanical energy of the press to power a BLE transmitter to trigger voice input on a watch. I feel like it’s much safer, plus it has no fixed lifespan.

[skeledrew]

How will a single press provide that much energy?

[rpdillon]

Mentioned elsewhere: this is why they didn't go with a rechargeable battery.

[_flux]

I suppose it would be possible to design the ring so that any pillowing would occur only in outwards expansion.