[2676] US Finger Fingertip Blood Oxygen Meter SPO2 LED Pulse Heart Rate Monitor

Main performance 
Display Mode: Segment LCD display
SpO2 Measuring Range: 0%～100%, (the resolution is 1%).
Accuracy: 70%～100%: ±2% ,Below 70% unspecified.
PR Measuring Range: 30bpm～250bpm, (the resolution is 1bpm)
Accuracy: ±2bpm or ±2% (select larger)
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).
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%.
Power Consumption: less than 20mA
Voltage: DC 2.6V~3.6V
Power Supply: 1.5V (AAA size) alkaline batteries × 2