Finger Fingertip Blood Oxygen Meter SPO2 OLED Pulse Heart Rate Monitor Oximete

Indirectly measures the oxygen saturation of a patient's blood and changes in blood volume in the skin, producing a photoplethysmograph.
This oximeter also displays the heart rate.
Make sure to use strong reputable power cells and insert them in the correct position.
(The finger must be firmly placed over the sensor to get a reading, if it is not placed correctly the oximeter will automatically turn off in a few seconds.
Do not open up return-cases in such scenario.)
Battery Size: 2 AAA 1.5V Alkaline(Do not supply)

Specification
- Compact design, lightweight for convenient to carry
- SpO2:
- Measurement range: 70~99%
- Resolution: 1%
- Accuracy: +/- 2% (70%~99%), unspecified (<70%
- Pulse rate:
- Measurement range: 30~240bpm
- Resolution: 1bpm
- Accuracy: +/- 1bpm or +/- 1% (which is greater)
- Power consumption: <=30mA
- Working voltage: DC 3V
- Battery life: about 20 hours
- Low voltage indicator
- Automatically power off in 8 seconds when there is no signal
- Comes with Manual

-It's also suitable for small child