1. Compact appearance, more convenient to carry.
   2. A button to wake up, even the elderly can also be used simply.
   3. Two 1.5V AAA batteries can be used continuously for more than 15 hours, more
   environmental protection and energy saving.

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%.

Can be connected to the phone or pad via Bluetooth, and through the APP data analysis
and preservation.

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.