We know Iphone 7 have no headphone jack because they tried replacing it with wireless bluetooth headphones. iIt is hard to control the volume and it is so easy to lose them because they were too small. hey could have at least made it into a hairband like design so the 2 ear pieces are always together. I constantly fear I will lose one piece. I also felt like they will fall off my ears because they don't fit well with mine. I still prefer a headphone jack because I can attach the device to a stereo or use any headphone or earbud I like.