• Simple and convenient operation, fashionable and practical design. • The product is small, lightweight and convenient to carry. • Intelligent audible broadcasting. • SpO: and pulse rate value display. • Bar—graph display. • Power supply: Dry battery (2 x 1.5V AAA). • Low—battery indicator: when the voltage is too low, the low—battery indicator flickers with audible prompt. • Intelligent audible broadcasting of the pulse rate and SpQ2 values. Accuracy: ± 2% in range of 70%—100% SpOa, and meaningless when range is smaller than 70%. Pulse Rate Measuring Accuracy: when the range of pulse rate is...