This smart fitness tracker features advanced sensor technology to provide professional-grade health monitoring services The heart rate monitoring function uses optical heart rate sensors to track your heart rate 24/7 continuously, alerting you to abnormal heart rates and keeping you informed about your cardiovascular health. Blood oxygen saturation detection employs infrared light technology to accurately measure oxygen levels in your blood, particularly useful for high-altitude activities and sleep apnea monitoring Sleep monitoring system automatically identifies light sleep, deep sleep, and REM sleep stages, generating detailed sleep quality reports to help improve your sleep habits. Activity tracking supports 10+ sports modes including running, walking, cycling, swimming, yoga, automatically recording exercise data and providing professional analysis Bluetooth 5.0 technology ensures stable connection, supporting call display, message alerts, and social media notifications so you never miss important information. Built-in music control allows direct operation of your phone's music player, making workouts more convenient IP68 waterproof and dustproof design enables wearing during swimming and showering, suitable for various exercise environments. Exceptional battery life lasts up to 7 days on a single charge, eliminating frequent charging hassles. 1.4-inch HD color touch screen provides clear display and smooth operation Available in M7/M8/M9 three series with six fashionable color options to meet different aesthetic preferences. Lightweight design ensures comfortable wear without burden, perfect for all-day use. Whether for fitness training, daily work, or leisure activities, it's your ideal health companion