ClenchAlert® Biofeedback Device

Way too big for my mouth. Great idea but it hurts after 5 minutes.

Too large for my mouth.

Didn't realize this is a disposable product with a non-replaceable battery. It's also fairly large. A second one, with no battery, is included so both can be used at night to even out the pressure. It was too much to keep loose in my mouth overnight. Won't be using this again.