The Amazfit Helio Strap is a screenless fitness tracker that positions itself as a direct competitor to Whoop, offering similar functionality without the hefty subscription fees. Priced at $99.99, this lightweight 20g device provides comprehensive health monitoring including heart rate tracking, sleep analysis, stress monitoring, and SpO2 measurements. The device can be worn on either the wrist or upper arm (with optional armband accessory) and delivers impressive battery life of up to 10 days. Key features include 25 sports modes, automatic workout detection, VO2 max tracking, and Zepp Health’s BioCharge energy monitoring system. The heart rate accuracy is particularly strong when worn on the upper arm, matching professional chest straps within 1-2 BPM. While the automatic exercise detection can be overly sensitive and the Zepp Health app interface could be more polished, the core tracking capabilities for heart rate and sleep are remarkably accurate. The device offers a 5ATM waterproof rating and integrates with popular fitness platforms like Strava, TrainingPeaks, Apple Health, and Google Fit.

Apple has unveiled the Apple Watch Series 11, featuring revolutionary hypertension monitoring that works passively in the background using optical heart rate sensors to detect signs of chronic high blood pressure over 30-day periods. The watch also introduces Apple’s first native Sleep Score, providing users with a 0-100 rating based on over 5 million nights of sleep data analysis. Hardware improvements include a more durable, scratch-resistant display on aluminum models and extended 24-hour battery life, up from the previous 18-hour rating. The hypertension feature, pending FDA approval, will also be available on older models including Series 9 and Ultra 2 through the watchOS 26 update. Priced starting at $399, the Series 11 is available for pre-order now with store availability beginning September 19.