These buds are tinny, hollow sounding, and have no depth. They sound like cheap kids toys. They have no volume and have no stereo sound. I bought these over others available based on the reviews I read, and maybe I got a "bad" set, but I wouldn't take the chance.
Very tinny sound - absolutely no bass to speak of. Can barely hear my music while in the gym if there is a class going on. Frustrating. The good news is that the headphones themselves stay in place while running. Just wish the quality of sound was better.