I bought this because im a frequent music listener i like to hear the good thump and those sweet 808's so when the specs said capable of 20hz i just wanted to give them a try and they work. You're getting what you came for but the problem here is that there is leakage from the ear. the design is not meant to be in the ear and that makes sound come right in. when im running or in my car all i can hear is the road and my own steps. It also muffles the sound and the bass is unhearable not to mention the bass is not what it says. It's actully roughly about 34-36hz and up. none the less decent headphones for its price.

I bought a pair for my sister for Christmas 2018 she is in love with them. I tried them out thinking that it was going to sound "OK" but let me tell you, I was wrong. The sound quality and bass is amazing. They sit in your ear very comfortably, I don't even feel them. Some other make my ear hurt but not these. I convinced myself to get myself a pair now. I would recommend these earphones and I already have to friend.

Speaker and microphone is not working properly , and some time not connect it.