Comment by kennyadam

The battery lasts for 12-15 hours and how long you manage to stretch that out to is up to you. The site says "On average, I use it 10-20 times per day to record 3-6 second thoughts. That’s up to 2 years of usage."

So, you can use it for 30 seconds a day to get 2 years of usage. They also mention using it to control your music, the lights in your home and are assuming STT accuracy of 100% using a local model. The fallback of having to manually transcribe it from the audio recording if the STT fails is going to happen often enough that it'll get annoying. You're not going to be sending any messages to people as that will take a lot longer than 30 seconds a day.

I suspect the battery will last about 3 months if you just use it how you'd think it can be used. You would need to really discipline yourself to keep to a limit of 30 seconds of use a day.

I think they will need to end up adding some charging contacts to the surface once they start sending these things out into the wild or sales will be very limited.

How do you know how much time you have left on the ring's battery? Do you have to keep checking the app? Why not just use your phone for notes then.