Ultrahuman Ring AIR -älysormus, koko-09, Matte Grey

Although the ring sizing kit is super innovative and I had no issues with the sizing kit, I would advise you to not invest in the Ultrahuman products as the smart rings are more deffective than they are working. On the off chance that you get a ring that works out of the box, doing research and through personal experience it stops working for most users and they have to get replacements.

The ring size was not good. The battery did not last very long. Looking at online reviews, there were a lot of issues with build quality and battery life. Thankful for the excellent Costco policy on returns.

Excellent quality ring. I bought the sizing kit first to make sure I bought the correct size. It takes 2 weeks to fully calibrate based my daily routine and still shows helpful insights and body data during that time too. Easy to use and syncs well with Apple Health.

Very cool and nice to have for future purposes and also can pass along

The gold colour started to come off after 5moutha & it wasn’t worn in water