Ultrahuman takes aim at Oura with new ring's 15-day battery - but not everyone can buy it

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ZDNET's key takeaways 

• Ultrahuman unveiled its Ultrahuman Ring Pro. 
• The smart ring offers 15 days of battery life. 
• Due to patent disputes, it isn't available to buy in the US. 

Ultrahuman's next-generation smart ring could stay on your finger for over two weeks with a recharge. The smart ring maker unveiled the Ultrahuman Ring Pro on Friday, and the newest smart ring offers significant upgrades over the Ultrahuman Ring Air, which debuted in 2023. 

These improvements include a new Qi-enabled Pro Charging Case that stores up to one year of ring data and delivers 45 days of battery life. It comes with Find My capabilities for easily locating the lost ring and viewable feedback with LED indicators and haptics. 

Also: Why your Oura Ring battery is dying quicker (and what Oura is doing about it ...