Measurement is simple and convenient:
Put the finger into the fingertip type photoelectric sensor, the device collects data through a light-sensitive detector, and then the measurement result is shown on the indicator.
Note: From the analysis of medicine, at low altitude environments, oxygen (oxygen saturation value) in the blood of normal ranges: 94% -100%; in quiet state, pulse rate value per minute is in 60-100. If your measured value does not meet the above specifications, please monitor separately 2-3 times at different time during the day, please maintain 2-3 days of continuous monitoring, if the value still does not meet the standard value, it is recommended that you go to the hospital for treatment in detail
Main features:
Integrated with SPO2 probe and processing display module
Small size, light weight, easy to carry
Easy to use, low power consumption
SPO2 and PR display, and bar graph display
Pulse waveform display
Battery level indicator
Can change the display mode, changes in four directions
Auto power off function: In the state of measuring interface, automatically shut down within 8s after take away the measured finger

Performance:
Display mode: 1.1-inch color OLED screen display
Screen resolution: 96 * 64
Accuracy: 70% ~ 99%: ± 2%, less than 70% is not defined
Pulse rate measuring range: 30bpm ~ 240bpm (resolution: 1bpm)
Accuracy: ± 2bpm or ± 2% choose bigger value
Error under weak perfusion: when the pulse filling degree is 0.4%, the oximeter can display the correct oxygen saturation and pulse rate value, oxygen saturation error of ± 4%; pulse rate error of ± 2% or ± 2bpm to choose bigger value.
Anti-environmental light interference: the measured oximetry values with indoor natural light and the existing light source compared to that with darkroom conditions, the deviation is less than ± 1%
Consumption: less than 30 mA
Operating voltage: DC 3.0V
Battery: 2 x AAA 1.5V alkaline batteries (not included)
Battery working time: Minimum lasts 20 hours, the theoretical value of 32
Security type: internal power supply, BF type application part

Material: Plastic
Color: Blue + White
Size: 58 * 35 * 30mm

Note: Although I am required by law to provide to you and obtain from you a signed written waiver of the medical evaluation for an oximeter, these over the counter oximeters, which do not require a prescription, they are not medical devices, and comply with all eBay guidelines. Again these are over the counter (OTC) oximeters and a waiver form is not required.

According to the FDA, it is in your best health interest to obtain a professional medical evaluation before purchasing an oximeter and you are encouraged to do so before bidding on this item. If you choose not to obtain a medical evaluation before purchasing this item, I am required by law to provide to you and obtain from you a signed written waiver of the medical evaluation. I am also required to provide to you a copy of the User Instruction Brochure for an oximeter, review the contents of that brochure with you, and allow you time to read the brochure. You must provide to me either a signed statement from a physician or a signed waiver before I will deliver this item to you. Upon your request, I will also provide to you a copy of the User Instructional Brochure for the oximeter or the name and address of the manufacturer or distributor from whom a User Instructional Brochure for the oximeter can be obtained.”

1 x Pulse Oximeter
1 x Strap
1 x English User Manual
In Color Box