Choose high brightness constant light LEDDisplay light, for LEDThe driving circuit has been technologically optimized to maintain a constant display effect under different power supply environments and battery levels;

The circuit of lithium-ion powered models has been optimized to prevent overcharging and discharging during charging, and supports USBPower supply, can be measured while charging;

The measurement process can detect "irregular pulse waves", and users can be reminded to seek medical advice for heart rate irregularities, arteriosclerosis, etc;

Built in 5-level volume adjustment with WI-FI/Bluetooth dual in one interface, can be externally connected to APPConduct personal measurement data analysis;