Amazon calculates a product's star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers and factors that establish reviewer trustworthiness.
Its fast smooth and responsive. Lots of faces which is the best part. But I got a small scratch on the 3rd day and I don't even know how. Then i put a case and it feels better. I used it with both iPhone 6S and a Galaxy S9 and both it was smooth.
The watch is great with a very unique and sleek style. Also has many interfaces. You can choose the one that aligns best according to your mood. But have to say the watch is littel to expensive. You can easily choose any other watch or fitness band over it. But if you are looking for reliability and brand value then you should go with this one.
I mainly bought it for listening songs through watch while jogging without taking any phone.I tested various bluetooth earphones.All works fine.You have to press the volume up button in Bluetooth earphones for max sound.