Advantage of the watch Huawei Watch GT 4 is that the HUAWEI TruSeen™ 5.5+ System records your heart rate, SpO2, sleep and stress with extreme accuracy, allowing you to be informed at all times. Special attention is paid to women's health, as with this watch you can easily check the predicted times of menstruation, ovulation and fertility periods, which are based on high-level physiological data and a deep learning algorithm. The watch also takes care of limiting or controlling your stress and offers you breathing exercises to calm down and relax.