Xiaomi Watch S4 41mm Smart Watch 1.32″ NFC GPS 24-hour Health Monitoring
品牌与型号：小米手表 S4. Smart Life Assistant. Large-capacity battery with smart power-saving for extended usage. Stylish Versatile Design. Long Battery Life. 100+ Sports Modes. 兼容性：Android 和 iOS. 防水等级：5ATM（防水游泳）.