ReSound Unite Phone Clip+

ReSound is an American company that produces hearing aids and accessories to improve the lives of those with hearing loss.

The Unite Phone Clip+ is a little gizmo that streams phone calls and audio straight to a ReSound hearing aid. You need to download the ReSound Control app onto your phone (compatible with iOS and Android), from which you are then able to control the volume of one or two hearing aids separately, creating the perfect level of volume for your needs.