Ultrahuman Pro bad, bad, bad - don't bother.

Ordered the sizing kit months ago. Had to chase several times for them to deliver it. Got the sizing kit, but zero information provided to upload my ring size.

Customer service chat is just low quality AI that goes in circles, the app won't do anything until it connects to a ring... Emails to customer service are ignored.

Avoid at all costs, going back to Oura.