pathetic. it stopped working after 4 months of light use. do not recommend.
but, while using: - pros: the ear buds fit well and were quite comfortable. - cons: the magnets on the ear buds' backsides were extraneous and didn't add much value for me. the cord length was much longer than previous earbuds (I am 170cm) so it felt too long and I had to wrap around a few times.