The most important thing to understand is that accuracy comes first. It's easy to use. The only thing that was a bit confusing was the Bluetooth app; mainly because the instructions for setting up or pairing the test device with the phone weren't clear. However, with a little diligence you will figure it all out and then you have an excellent combination. I could give it 4 stars as it's difficult to get the app and pair it, but the overall performance combined and on its own doesn't justify losing a full star.
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