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.
: Data can be retrieved via USB connection to a dashboard for analysis. Consumer Alternatives metria wearable sensor buy
: For researchers, retailers like RobotShop or MindTecStore offer various heart rate and EMG sensors for development projects. If you are looking for a high-accuracy wearable