Josh Kerr's recent world mile record and Commonwealth Games victory showcased the Amazfit Helio Strap. This screen-free fitness tracker offers continuous heart rate and sleep tracking. It provides a daily readiness score based on overnight and background readings.

The Helio Strap, weighing 20 grams, offers a 10-day battery life. It delivers reliable arm-based heart rate data, crucial for elite athletes. Its unobtrusive design minimizes distractions, focusing on performance rather than notifications. Read more racing coverage.

Though not as deep as pricier rivals, the Helio Strap offers accurate heart rate monitoring. It is comfortable and more precise than wrist watches. This screen-free wearable represents an emerging category in fitness technology. Related: Josh Kerr Reflects on Commonwealth Games Victory and Future Goals.

This original Runner World brief is based on reporting from Athletics Weekly. Visit the source for its complete reporting, context and any later corrections.