It’s shrunk by 40 percent compared to the Ring 4. Oura Smart rings may blend invisibly into our lives , but they're not good at blending invisibly into our hands. Unless you're a fan of chunky statement jewelry, it's likely your smart ring makes every other ring you wear look tiny by comparison. That's the issue Oura is looking to solve with the new Ring 5, which is a whopping 40 percent smaller than its immediate predecessor . Shrinking such a small piece of gear down by that much has taken a lot of engineering, but the company says it comes with no compromises. If you've previously been put off by the bulk of most smart rings, then today might have all the makings of your lucky day. Oura's VP of Product, Jason Russell, explained that the company heard plenty of users asking for smaller rings. To reduce the size by almost half, every part of the ring has been redesigned to be both smaller and more power-efficient.…