The monitor is an excellent device for rapid assessment of pulse rate and oxygen saturation. However, if your heart rate varies from moment to moment due, e.g., to arrhythmia, the readings probably need to be calibrated against longer time interval measurements (30 seconds or 60 seconds).
This device works as advertised!
Works extremely well. Very happy with this product.
Thank you but it is a gift for Christmas so unable to say anything.
Excellent communication, and good delivery considering Covid. Product is good value and works well.
It works great
Fast delivery, i am very happy
Small unit does exactly what it should, a handy little piece of equipment.
Finger Pulse Oximeter / Blood Oxygen Saturation Monitor