Amazfit Helio Strap Screenless Activity Tracker, 10-Day Battery,iOS/Android

Long battery lifeMany reviewers

Reviewers report long battery life, with some getting around ten days or more between charges.

Comfortable, lightweight wearSome reviewers

Reviewers describe it as lightweight and comfortable enough for continuous wear, and say it can be worn alongside a traditional watch.

Useful sleep and recovery dataSome reviewers

Reviewers value its sleep, recovery, stress, and readiness insights for guiding workouts and rest days.

Screen-free trackingSome reviewers

Reviewers appreciate tracking health data without smartwatch notifications or needing to wear a smartwatch.

Water-resistant for swimmingSome reviewers

Reviewers report using the tracker at the beach, in the shower, and while swimming.

Uncomfortable or ill-fitting bandSome reviewers

Reviewers report that the included strap can be too large, stiff, or uncomfortable, and may take time to dry.

Device stops chargingSome reviewers

Some reviewers say the device stopped charging, connecting, or working after weeks or months of use.

Inaccurate activity trackingA few reviewers

Reviewers report inaccurate workout distance, pace, calorie, or step data.

Sleep tracking misses interruptionsA few reviewers

Reviewers say sleep tracking misses awakenings or fails to detect sleep reliably.