Walkers Game Ear HD Elite Digital Hearing Aid Communicator Package with Three program settings (Communication, Enhancement and combined Communication and Enhancement), Adjustable Frequency Tuning - AFT, 50dB of hearing enhancement, 4 digital sound processing channels, 20-bit audio processor for crisp clear sound, 8-band graphic equalizer, Nano-Tech Water repellant coating, Automatic feedback control, Toggle volume control, Sound activated compression (SAC), Low battery tone indicator, Noise reducing rating, NRR 29db, Power source: #13 battery. Includes Unit, PTT microphone loop, sound tube/earplug, batteries and carrying case.