This tiny hearing aid is invisible and user friendly. It is designed to fit snugly into the ear canal for comfort and a secure fit. The volume is adjustable. They are color coded with red for the right ear and blue for the left ear. The devise's smart noise reduction can isolate specific sounds like speech, music, and television. These hearing aids have never been used, and the original cost was $175.00. An instruction book is included. 2 batteries are in the case but may need to be replaced.