The Anarow Smart Ring Fitness Tracker does what most smart rings promise but few deliver: it tracks health data continuously without demanding your attention. The silver 8 finish is understated enough to pass as a regular ring, which matters when you wear something 24 hours a day. Eight sizes are available, and Anarow’s guide recommends sizing up if you’re between sizes—that extra millimeter keeps the sensors stable during sleep and workouts.

Health monitoring covers heart rate, blood pressure, and SpO2. These aren’t medical-grade readings, but they’re consistent enough to spot trends. The ring tracks deep, light, and REM sleep cycles, and the SmartHealth app organizes daily and weekly insights into clean graphs. At 4 MB of memory, it stores several days of data before syncing to your phone via Wear OS 3.0. The ring is lightweight—you’ll forget it’s there until you check the app.

Battery life is the trade-off. The lithium polymer battery lasts about three to four days with continuous monitoring, so you’ll charge it more often than a larger fitness band. But if you want health tracking that disappears into your daily routine, this ring earns its place on your finger.