Google Fitbit Air - Screenless Activity Tracker, Fog

Useful health and sleep trackingMany reviewers

Reviewers value the activity, heart-rate, and sleep data, including helpful sleep feedback and health insights.

Lightweight, comfortable fitMany reviewers

Reviewers say the tracker is comfortable, barely noticeable, and easy to wear while sleeping.

Screen-free, minimal designMany reviewers

Reviewers appreciate the screenless design, low-profile appearance, and freedom from wrist notifications and distractions.

No required subscriptionMany reviewers

Reviewers like being able to use tracking features without paying for a monthly subscription.

Long-lasting batterySome reviewers

Reviewers report that the battery lasts more than a week or several days, and one says it charges quickly.

Inconsistent tracking dataSome reviewers

Reviewers report inaccurate or inconsistent heart-rate, cardio-load, or workout-distance data.

App and syncing problemsSome reviewers

Reviewers describe syncing issues, an incompatible phone, and an app they found frustrating.

Short-term failures or damageSome reviewers

Reviewers report a defective button, a tracker stopping or dying within months, or a band tearing.

Limited sensor availabilityA few reviewers

Reviewers report that sensors did not work outside the United States or failed to read heart rate on tattooed skin.