Review on UMIDIGI UFit Smart Watch with SpO2 Blood Oxygen Meter, Heart Rate Monitor, 5ATM Waterproof - Fitness Tracker for Men and Women, Compatible with iPhone and Android Phones by Trey Angus

Update: Just want to point out that I had to deal with the support team and they have been great. Quick response and they made sure to fix the problem. I'm leaving my rating at 4 stars instead of 5 as the app still needs improvement, but for the price you can't beat this watch. Edit: I realized that one thing that might be important for users is plugging in a magnetic charger. The problem is that if something magnetic is nearby and this connector is attached to it, it can cause damage. Be careful when not connected to the watch. I was looking for something to measure my blood oxygen levels and this watch does it for a fraction of the cost of many of its competitors. It also measures some other parameters like heart rate and blood pressure. I'm not sure if that's correct, but it seems like a good barometer to follow. The only thing I would criticize is the poor integration of the watch data with the app and from there with the iOS Health app. Oxygen readings etc are recorded but mostly stay on the watch and are not shown in the app and certainly never recorded in the IOS health app. This appears to be a simple software issue that can be easily resolved with a little extra programming. No idea why it hasn't been done yet. It's important to me to be able to easily identify trends and not just look at the data at the moment I'm measuring it. With a bit of work and maybe more detailed instructions this watch is amazing for the price.