Just like everything else, smartwatches are getting more advanced features every new generation. The Citizen CZ Smart Sport Watch is a 44mm watch with an app built using research from NASA Ames Center and IBM Watson AI models. CZ Smart YouQ gives you HR, SpO2, fitness activity, sleep, alert scores. It gives you an Hourly Power Score that indicates your mental and physical energy.
This watch is powered by Wear OS. It is compatible with iPhone and Android devices. It is smart enough to suggest actions to improve your alertness and develop better habits based on your data. This watch has Alexa built-in. The battery lasts over 24 hours.[official site]