Main performance
1) Display Mode:Color  display
2) Screen Resolution:128*64
3) SpO2 Measuring Range:0%~100%, (the resolution is 1%).
   Accuracy:70%~100%:±2% ,Below 70% unspecified.
4) PR Measuring Range:30bpm~250bpm, (the resolution is 1bpm)
   Accuracy:±2bpm or ±2% (select larger)
5) Measurement Performance in Weak Filling Condition:SpO2 and pulse rate can be shown correctly when pulse-filling ratio is 0.4%. SpO2 error is ±4%, pulse rate error is ±2 bpm or ±2% (select larger).
6) Resistance to surrounding light: The deviation between the value measured in the condition of man-made light or indoor natural light and that of darkroom is less than ±1%
7) Power Consumption:less than 30mA
8) Voltage: DC 2.6V - 3.6V
9) Power Supply:1.5V (AAA size) alkaline batteries × 2   
10) Battery working hour: Two batteries can work continually for 20 hours,The theoretical number is 36 hours
11) Safety Type:Interior Battery,BF Type