IN EXCELLENT PRE-OWNED CONDITION. The Listening Program Essential System by Advanced Brain Technologies is a cutting-edge brain technology designed for improving auditory processing and communication skills. The system includes Waves Air and Bone Conduction Headphones, which allow for a unique and immersive listening experience. The sleek black color adds a touch of style to the overall package, making it a practical and stylish choice for individuals looking to enhance their auditory abilities.. includes two rechargeable batteries