* Display Format: LED
SPO2:35-99% in two-digit 7-segment digital;
Pulse Ratio:30-240BPM in 3-digit 7-segment digital;
Pulse Wave: 6-segment barograph;
Battery Voltage Low Indication: LED signals.
* Power Requirements: Two AAA size 1.5V Alkali Battery;
* Power Consumption: less than 40mA.
* Resolution: ±1% for SPO2 and ±1 BPM for Pulse Ratio.
* Measurement Accuracy: ±2% in stage of 70%-99% SPO2 and meaningless when
stage being smaller than 70%. ±2 BPM for Pulse Ratio.
* Measurement Performance in Weak Filling Condition: Oxy haemoglobin and pulse
value can be shown correctly when pulse-filling ratio is 0.5%.