Bragi, for example, had to delay production so it could build a hearing aid technology called Near Field
Magnetic Induction into the Dash earbuds in order to get around using Bluetooth between buds.
Optoma packed a bunch of features
into the BE Free8, including an IPX5 rating for weather and water resistance, near - field
magnetic induction, as well as 6 mm dynamic drivers paired with the company's own proprietary Sonic coating.