Oura Ring 4 provides compact, accurate health and fitness tracking with multi-day battery life, improved wearability, and comprehensive app features for $249 on sale.
Forget Whoop: This fitness tracker I tested rivals it in features and has no subscription fees
Polar Loop is a display-less, distraction-free fitness band using Polar's Generation 3.5 optical heart rate sensor, Bluetooth connectivity, week-long battery, and Polar watch compatibility.