🎧 High Impedance Piezo Electric Crystal Earphone: Perfect for Transistor Radio and Crystal Radios DIY Projects Review

The connector works great and the large resonance chamber gives my bats bass tones when they sing "blue suede shoes". Thank you very much.

The earpiece worked perfectly at first. Then it stopped working. I plugged in and the cables connecting to the earpiece are fine. So I removed the clear extension cord and tapped the panel inside with a screwdriver. It started working and is working fine now. Wanted to use it with my vintage SW radio which has a mono headphone jack.

I use them to make Crystal Radios and they work great. I just remove the help end, then disconnect and strip the wires and they're ready to go. I have used several of these headphones and they always work flawlessly. The only thing is that they are fragile so you don't want to drop them or the piece of plastic that goes into the ear will fly out right away. I used a small 3D printed plastic cover to replace the broken part and it still worked like new. I recommend!