ALERTSEAL Fitness & Activity Tracker with Alexa Built-in, 5 ATM Water Resistant, Blood Oxygen, Heart Rate, 14 Sports…


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ALEXA BUILT-IN: Speak to Alexa on your fitness tracker. Ask questions, get news, set alarms and timers, check the weather, control your smart home devices, and more.
BLOOD OXYGEN SARURATION MONITOR (SpO2): It is recommended that the following people insist on monitoring their blood oxygen concentration for a long time: heart disease, high blood pressure, diabetes, respiratory diseases , over 60, Snorer, athletes, mountaineering enthusiasts, sportsmen, work more than 12 hours a day, Long-term alcoholics.