Sleek design with exceptional craftsmanship. Exquisite aluminium alloy frame with a stainless steel-like high-gloss texture produced through a PVD process. Trendy and fully customisable Xiaomi Watch S4 draws inspiration from traditional watches and offers a variety of iconic, trendy interchangeable bezels crafted from quality materials showcasing distinct, creative styles. High-precision sensing module for 24/7 health protection. The combination of a high-precision heart rate monitoring module and self-developed heart rate algorithm improves the accuracy of heart rate monitoring on the watch to 98%. It also functions as a personal running coach with on-wrist running courses for beginners, fat loss, weight loss, and improving cardiopulmonary function and endurance, offering professional courses and scientific training. Features running form recognition to automatically identify key running posture metrics like vertical ratio, vertical amplitude, and ground contact time to offer professional tips for better workouts. The professional skiing mode records your distance, time, average speed of each glide and turn, and more in the Mi Fitness app, with fall detection for safety while skiing. If no response is detected within 60 seconds, the system will automatically call your emergency contact. Seamless interconnectivity allows for remote photo-taking, finding your phone, earphone settings, and controlling Xiaomi Home devices, making smart wearables and home life more intelligently interconnected. Convenient NFC payment for contactless and cashless payments is available by tapping your Xiaomi Watch S4 against a payment terminal, now supporting Mastercard and Visa. Enjoy a vivid, ultra-clear 1.43” AMOLED Always-On display with smooth touch response, perfect for bright outdoor use and stylish everyday wear. Track your heart rate, blood oxygen saturation (SpO₂), sleep stages, and stress for 24/7 health monitoring. With over 150 sports modes and smart detection, including automatic workout recognition and detailed activity analysis, it supports a wide range of activities like running, cycling, swimming, and yoga. Make and receive calls directly from your wrist via Bluetooth connection, and stay updated with message previews, app alerts, calendar reminders, and weather info. Enjoy up to 12 days of battery life, 5ATM water resistance for swimming, and built-in GPS for accurate workout tracking.