WelluePulse Oximeter Fingertip Blood Oxygen Saturation Heart Rate Monitor with Batteries and Lanyard Bluetooth FS20F White

This is a great deal considering the app was icing on the cake. The unit and app work well together.

Added battery and it was functional immediately. Has lasted on one battery, 6 months now ... Still going.

Great product. Well made and fits my finger better than the other models Ive tried.

The instrument appears worth the low price. I have not be able to check all the software features. I just downloaded. the support software from Google.Read the warnings on its use regarding infr red light and wear time. I am not sure that these warnings are unique to this instrument and may apply to similar products.The product was ordered 3/12 with next day arrival mention the Amazon discription., however it was not received until 3/15.The product gives similar results but not exactly the same results of my old instrument, But my old instrument was about 5 years old. I am satisfied with my purchase. I will keep the instrument for general use but may look for something else due to my unique situation to measure over extended periods of time.

It is a quick easy to use device.

Trying to give you a five stars the first one would not light up though the product is great thank you

Excellent product, easy to read and operate. Prompt shipment

Came with batteries and a strap. But, the pulse oximeter doesn't work consistently. My pulse read 91, 94, and 25 in three tries within 15 minutes. I had expected that the oxygen measurement would change with deep breathing, the way it does with the oximeter in the doctor's office. But, it did not. I'm returning this because I cannot trust the measurements.