- Sound, fast connection, you can connect to the phone, but switch to a TV, for example, acceptable battery life.
- Microphones work disgustingly, they hear me normally when making calls only if I'm at home in silence. These are not 2 independent headphones like samsung or aple, the left one is always connected to the device, and it already transmits sound to the right earphone, as a result it is impossible to charge one and use the second one. When used as a headset for talking on Skype, on the phone or in any other way, only the left earpiece works, the right one is silent like a partisan. Often, when listening to music, there is a desynchronization for a second and the sound lag when watching a video (always) infuriates, especially when watching youtube. When discharged, the earpiece says low battery and cuts out at the same second, without letting you come to your senses, at least they warned you beforehand. A little big cover, it is not so convenient to carry in your pocket (very uncomfortable).