M4 Smart Band | Activity Tracker | OLED Heart Rate Monitor/Compatible for All Android & iOS Devices

Blood Pressure & Heart Rate & Blood Oxygen Measurement & Sleep Monitoring: Tracks real-time heart rate automatically & continuously and automatically tracks your sleep duration & consistency with comprehensive analysis of sleep quality data, high-performance CPU to monitor blood pressure & blood oxygen, helping you adjust yourself for a healthier lifestyle. All-day Activity Tracking: Accurately record all-day activities like steps, distance, calories burned. Multi-sports modes includes walking, running, biking, hiking help you better understand specific activity data. Other functions like alarm/sedentary reminder, bluetooth shooting, find phone and so on, simply It's your life’s omnipotent steward.