Initially I had a few questions about usage and got an answer within 24 hours. They sent me pictures to help me and solved my problem immediately. For precision. You'll need to wear the tracker slightly tight to ensure the most accurate readings. I am most interested in blood pressure and oxygen levels. MorePro gives very similar, if not the same readings as my medical equipment. I can recommend this tracker.
Fast & Accurate Digital Ear Thermometer For Adults, Kids & Babies - IProven DMT-511 [Forehead & Ear Mode, LED Display, Fever Alarm And 35 Memory Slots]
44 Review
Accurate No-Touch Thermometer For Adults And Kids With Fever Alert And Memory Recall
47 Review
Impressive IPROVEN BPM-417 - Digital Wrist Blood Pressure Monitor For Home Use - Large Cuff And Heart Rate Monitor - Real-Time BP Reading With Wrist Guide, Movement Sensor, And Backlight
42 Review
Smart bracelet Xiaomi Mi Smart Band 5 Global, black
244 Review