Mgaolo Fitness Tracker with Blood Oxygen SpO2 Blood Pressure Heart Rate Sleep Monitor for Men Women,IP68 Waterproof Activity Tracker with HRV Pedometer Health Smart Watch for Android iPhoneAbout this itemAll-Day HR monitor with health Evaluation: All-day intelligent HR tracing by advanced PPG sensor for your activities & training, help you training more effeciently and safely. Just press and h..