XIAOMI Watch S4 41mm, Smartwatch, 41mm case diameter, Ultra lightweight 32g body, Menstrual cycle prediction, 150+ sports modes, Safety guardian features, HyperOS 3, Fluororubber Strap(Black)

Design:Stainless steel body, multifaceted-cut crown, minimalist lugs, inspired by classic wristwatch aesthetics Upgraded Menstrual Cycle Prediction: Equipped with 0.1°C high-precision temperature sensor for 24/7 skin temperature monitoring, leveraging temperature fluctuation patterns to predict menstrual cycles One-tap Health Check: Heart rate, blood oxygen, stress, and sleep health assessed in one tap — quickly understand your health status Safety Guardian Features:Triple-click crown button, automatically calls emergency contacts and shares precise location Xiaomi HyperOS 3: Focus Notifications, Prioritized alerts from system apps and Mi Home