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Compact appearance, more convenient to carry.A button to wake up, even the elderly can also be used simply.Two 1.5 V AAA batteries can be used continuously for more than 15 hours, more environmental protection and saving.
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Resting Heart Rate
Heart beats per minute while at rest tells a lot about your internal health and fitness levels. It is a strong indicator of your risk for heart problems.Blood Oxygen Level Your body requires a very precise balance of oxygen in the blood. For your body to perform optimally, blood oxygen levels should be above 95%.