Google Fitbit Air Berry

Lighter than a wedding ring. Tracks you for a week straight.

Google's smallest tracker ever: a screenless pebble that clips into a band and monitors you around the clock without a single notification. You check in on the Google Health app when you want to — and stay present when you don't. This one comes in Berry.

What it tracks, 24/7

• Heart rate and HRV
• Sleep with stages, using new models Google says are meaningfully more accurate
• Blood oxygen, skin temperature variation and breathing rate
• Resting heart rate, steps and distance
• Automatic workout detection

What makes it different

• Readiness Score and Cardio Load — the same push-or-rest guidance the premium trackers give, at a fraction of the price
• AFib detection during stillness and sleep, with alerts in the app
• Smart Wake — wakes you at the lightest point of your sleep window instead of mid-deep-sleep
• Five-minute charge equals a full day — the fastest recovery from an empty battery in this category
• No mandatory subscription — heart rate, sleep, readiness and the rest of the core tracking are free in the Google Health app

Specs

• Battery: up to 7 days; full charge in about 90 minutes
• Weight: 12 g with the band
• Water: 5 ATM (50 m) — swimming included
• No screen, no GPS chip (distance comes from motion and your phone), no ECG
• Wear: wrist
• Works with iPhone (iOS 16.4+) and Android 11+, via the Google Health app

Best for: someone who wants real health data without a screen on their wrist, without a big spend, and without learning an athlete's dashboard.