Work well but-
The cord conducts the slightest movement and amplifies it into your ear...i.e, if the earlobe rubs on the pillow ever so slightly ...that sound of friction is so loud if you are asleep you will be startled awake..if it rubs hair on your head...the sound is deafening...only way i can mute the sound is to run the cord over my face.
Rating: 4 stars