If you are looking for a high-accuracy wearable sensor for personal use that provides similar metrics (sleep, activity, and recovery), the following consumer-grade options are widely available: WHOOP Band Go to product viewer dialog for this item.
: Designed to be worn on the skin for up to seven days, even in the shower. metria wearable sensor buy
: Collects over 25 data types, including calorie expenditure, activity levels, steps, and sleep. If you are looking for a high-accuracy wearable
: A screen-free wearable with "always-on" heart rate sensors and a battery life of over 14 days, designed for 24/7 wear. Go to product viewer dialog for this item. : A screen-free wearable with "always-on" heart rate
While the Metria IH1 and related sensors were featured as "wearable health devices to watch," they are typically distributed through rather than standard consumer electronics stores.