Need to follow instruction carefully to set up for both ear. Overall, it sounds great for listening to music. For phone call, it uses only one earbud. In my case, it's left ear, very inconvenient. This is stated in the instruction manual but they should disclose this in the advertising. I am considering returning.

Battery life is about 90 minutes on full charge. I guess you get what you pay for!

1 earbud did not work. Returned order

I bought 2 sets. One for my daughter and one for me. Sound is fine but severely delayed. You can not watch YouTube with these due to the lag time. Then my set broke when removing from charging cable. The next day my daughter sent me a pic of her earbuds. The same thing happened to hers. Buyer beware.