I'm very pleased so far. First, these earphones finally do stay in my ears during a workout, unlike any other earphone I have tried so far. They are comfortable and easy to adjust. They also come with  a semi-hard case that protects them in my gym bag.The sound quality is more than acceptable for the price point and, after a few uses, the sound seems to be improving (break-in effect?). So far no complaints,  would recommend for a workout earphone or for any purpose if, like me, you have trouble with earphones and earbuds falling off all the time. 

Question: How is the sound quality of this one?
Answer: sound quality is more than acceptable