What makes theBoom E cost three times as much as theBoom O?
theBoom E is custom made at our lab to the customer’s spec. It uses a special speaker driver and a coiled bud that can be specified for the right or left ear. The unit rests comfortably on both ears and is made of a plastic tube that goes behind your head for use all day. The flex boom can be attached to the left or right depending on what you specify on your order.