Nice headphones, nice design, nice sound that becomes much better with an equalizer, very good battery for the price and type of headphones, I bought them for 35 Euros in early March

Negatives:
Because the buttons on the headphones are not touch but physical, you need to press them quite hard and sometimes it is annoying for the ears!
There is a slight delay in sound when watching movies or YouTube, about half a second! In music, conversation or videos where you don't see someone speaking, you don't notice any differences.

Sound, battery life, application.. all great!
And no disconnections at all!