I wear the Ultrahuman Ring Air every day, which makes me very excited to try the much-improved Ring Pro

• Ultrahuman has released the highly anticipated Ring Pro for preorder with a price of AU$739 in Australia
• It improves on battery life and heart-rate tracking, but its charging case steals the show
• Singapore and New Zealand availability and price TBC

Just a day after Ultrahuman's CEO broke his silence on the new Oura-beating smart ring, it went up for preorder in most major markets for $479 / £419 / AU$739. That makes the new Ultrahuman Ring Pro a lot pricier than the $349 / £329 / AU$599 Ring Air, but the several improvements its brings — including the promised 15-day battery life — does seem to justify the premium.

Alongside the better battery comes improved sensors for better heart-rate tracking, especially during sleep, and an upgraded dual-core CPU that enables on-chip processing so the Ring Pro doesn't need to rely on a paired phone. Ultrahuman also says that ...