The sound is really great. I really like the sound quality of it. I am using it since 2-3 days now and I like it very much. The battery life is also good, it lasted almost around 5-6 hours in one go with volume at 60-80% . I connected with iPhone as well as Android. The connectivity is easy just press the button to turn them on and turn on the Bluetooth of the phone it will pair automatically.
The best part is the mic placement I can take call easily with them while in gym and other daily routine as I don't need to get my phone out all the controls are there on the device .
I will surely recommend them it is a definite go from my opinion.