What is there to say? They do what you expect.
They connect to your smartphone (or other Bluetooth devices) and you are good to go.
The setup is quite simple, hold the play button until the little adjacent light begins to flash, then look for a new Bluetooth device on your smartphone, tap on “Connect” and you’re done!
The sound quality is very good for the size and for the fact that they work via Bluetooth, the battery lasts as much as mentioned in the product description (9hrs talk time, 8hrs music time).
The carrying bag is very useful, I suggest you leave the charging cable inside it, doing so you avoid having to search for it every time you need it, it’s also a proprietary one, so you really don’t want to lose it.
Overall they’re really good for what they offer and their price point, if you’re a runner or you like to exercise while listening to music, these are for you.