The proximity sensor for automatic playback / pause apparently only reacts to a strongly pressed ear, and if the ear is almost located in the wrong place, the sensor starts to act naughty. The problem is not as pronounced as on the JBL Live 660NC, but it still causes some inconvenience. And okay, I would turn off this function and forget about it safely, but after all, when you turn it off, there is still a sound notification that squeaks at idle when the sensor loses or detects an ear. Also on the outside of the left earpiece is a sensor for calling an assistant, which, again, is supposedly turned off in the application. Only after rebooting the headphones, it turns on again. As a result, any correction of the headphones leads to a parade of notifications either from the proximity sensor or from the assistant. I solved the problem with the assistant by resetting the headphones to the factory settings (hold the volume + and - for 5 seconds) and simply not turning on the assistant in the application anymore - in this case, the sensor on the left earpiece does not respond to touch in any way. The latest firmware at the time of writing is 2.8.0. By the way, I didn’t receive any notifications about the new firmware in the application, I just clicked on the version and suddenly received an ate. Headphones strongly squeeze the head. After a couple of hours of wearing, the ears themselves do not hurt, but the jaw muscles near the ears hurt. I solved the problem by stretching the headphones on the branded box, putting it like that for the night (see photo) - it got better. I think I'll keep it like this for a couple of nights. I really like the sound, design, build quality and material, which is ready to suffer other shortcomings.