Most functions in app appear to work. The audio from phone to ET485 watch worked fine for a few days where the phone audio came out of the phone. Then it stopped and a notice saying Bluetooth had to be activated. Phone shows device connected but that part of app doesn’t recognize that. All other functions work via Bluetooth to watch. Steps only register if your arms are moving which is normal for watches. Pulse rate and O2 level and blood pressure seem ok. Sleep is accurate on some nights. EKG seems to work well although a bit finicky if you don’t make good connections on the watch. Most all other functions including displaying text messages work well.

I like this app a lot however the issue I have the app keeps shutting off the Bluetooth connection randomly. I have tried everything including; pairing the watch with the app, reinstall the app and clearing and reconnecting the Bluetooth??It works fine after this process is done for a week or two, then starts to doing the same thing disconnecting the Bluetooth connection. What’s so odd is my iPhone shows that the Bluetooth connected the same as my smart watch, however the app claims the Bluetooth is not connected. Till I reset(Clear) the Bluetooth connection from my watch and pair it again??There has to be a glitch with this app, since I experienced the same issue with my other smartwatches I have.I have tried to update the app, it says it’s up to date??

I have been using this for 2-3 weeks. I have no idea whether it produces any accurate information, but hopefully it shows relative information to values assumed. It would also be nice to get descriptions of values shown in each of the tests.Recommendations to the software designers.1. Show measured values vs normal values2. Change colors on app with brighter colors with greater contrast. The pastel colors, especially the yellow and light green are nearly impossible for me to read. Possibly develop screen option having a dark background with light or white text. Avoid the pastel colors.Update: The watch loses some previous days data so it is unreliable in comparison of previous days health and activity. It saves information randomly about 30-60% of data that should be stored.

I purchased the 440 model a year ago for the blood glucose and other blood/body comps this watch offered and loved it so I decided to buy the 550 model thinking it would be even better and I have to say I am very disappointed that Hband developers took all those blood/body comps away. Please bring them back. If you are thinking about buying the 550 model check into their 440 model...it has more to offer you. Hopefully Hband developers will bring these 3 functions back to their 550 model in an update....otherwise don't waste your money on this model (550)