Read that cakes can be made in these. My problem with BlueTooth is using multiple devices all day long (2 phones & 2 computers is typical) so pairing constantly every time the phone rings or a voice chat begins (we use chat apps for business) just isnt very practical. Such a good quality. His winter Keen boots were a size 10, so in hindsight I dont know why I paid attention to people who checked "true to size" and ordered an 8 (probably b/c this all started with the 8. On top of this, I learned today that they turn off while charging??? What sense does this make? Any other wireless headset knows that this is a design flaw and has them ACTUALLY WORK while charging. Can wear for hours without worrying about head fatigue. Im prone to ear infections and blocked canals. I was able to remove the broken sheathing from the receptacle but naturally had to dispose of the cables and find an alternative. Theyre not nearly as comfortable as the J1 even after trying multiple configurations of ear pieces. The fuzzy house slippers are just too hot.