Has some pros: Connection speed, sound quality, price - everything is gorgeous Has cons: when connecting 2 devices - it starts to get lost to whom to connect, and you need to turn off the second unwanted device

Got pros: Connects very quickly. Clear good sound, no interference and other things. Some cons: Does not work autonomously for some time, when the power is turned off.

Pros: Connected without problems, the sound quality is quite good Different cons: it was not possible to establish a voice connection, it seems that this function was in the description

Apparently assembled on the basis of bluetooth headphones, so they connect on their own and always show a 100% charge level