Xiaomi Watch S4 Black

• Device type: stylish next-gen smartwatch with a round AMOLED display and advanced health features (released in 2023).
• Display: 1.43″ AMOLED, 466×466 resolution, 60Hz – bright and smooth with Always-On support.
• Build: aluminum case, interchangeable bezel, 5 ATM water resistance – suitable for daily wear and workouts.
• Connectivity: Bluetooth 5.2, Wi‑Fi, GPS, Bluetooth calling via built-in speaker and microphone.
• Features:
 • Heart rate, SpO₂, sleep, stress, and menstrual cycle tracking
 • Over 150 sports modes
 • Mi Fitness integration, music and camera control
• Battery: up to 10 days of use, magnetic charging.
• OS & compatibility: HyperOS, compatible with Android and iOS.
• Compared to Watch S3: slimmer body, better battery life, more stable Bluetooth calls, and enhanced sensors.