What is Reddit's opinion of Portable FM Radio Headphones Ear Muffs with Best Reception, Battery Operated Personal Wireless Headset FM Radio Receiver for Walking, Jogging, Outdoor (Battery not Included)?

From 3.5 billion Reddit comments

They're pretty uncommon nowadays since people don't listen to the radio but you can still find them fairly cheaply on Amazon. I use these. They work well for playing guitar wirelessly but the audio quality could be better. It's not unusable or anything but it's enough for my tone to be different enough to be noticable.