Bought 9. They stay on and so far after dozens of miles they work and clean up easily. Arrived on time and as advertised. The set up is very easy, they are a different form factor than AirPods and they actually have small rubber "gaskets" that go into your ear. usually i buy 100-300yen pairs from daiso but im glad i paid a bit more this time for the extra comfort. The tools they provide would be enough to do the assembly in a pinch but if you have a metric socket set your life will be a lot easier. Versatile for Teams calls with USB and aux. The boxes have wholes for the ends to latch but they would not fit properly and it would just fall apart. I have been wearing these around the house without socks and they always feel like they are going to fall off my feet, but they havent. I like the fact that this covers my full abdominal region.