It was an unnerving sound

High pitch buzzing sound, very irritating

Makes a whining sound when in use

It is an intolerable sound.

Only problem I have is that when it is charging there is a faint sound produced that sounds like air escaping a small hole in a balloon, but metallic

It works as a plug, but the sound is unbearable.

Unfortunately every time I use this product it makes an awful buzzing sounds to the point that I can't even use it

Terrible squeal sound when in use