Anarow’s Smart Ring is a minimalist take on health tracking. It swaps the wristband for a discreet ring, aiming to deliver core biometrics without the bulk. The idea is simple: wear it and forget it, while it logs the data.

In practice, the ring tracks heart rate and SpO2 continuously, and its sleep stage analysis is surprisingly detailed for its size. The companion app, SmartHealth, organizes daily and weekly trends clearly. You get a quiet, persistent log of your vitals. The 4 MB of onboard storage handles a day’s data before syncing, and the battery typically lasts about a week. Just know the sizing is critical—it’s non-adjustable, so using their guide is mandatory for a proper, comfortable fit where the sensors work.

For a focused overview of heart rate, blood oxygen, and sleep quality, it delivers. It won’t replace a dedicated sports watch for GPS or intense workout metrics. But as a lightweight, all-day health monitor you barely notice, it finds its purpose.