I was looking for a good way to refrigerate wine bottles that are partially empty. So, that pretty much sums up the MU6 Ring. The firmware update was awkward, both in time to execute plus tying up the phone (couldnt use it to work out with another set of buds) At this point I was hoping the update would improve the sound quality, what I expect from this brand - and it did. Trust me, the little door is there, its just a bit stealthed. These DONT and fit VERY Snug. Without afterburners even! It shows you on your phone once you open your AirPods case. I had to drill a hole in the folding part and use an extra screw because it moves around too much while tryingto put my bike on this or while trying to remove it. The clip is still inconveniently on the outside. Wish and wear well too