newhearing aid * 100% digital processing for exceptional sound quality *2 Channels WDRC Multi Memories Amplifier *5 Bands Frequency Shaping *2 Channels Low Level Noise Reduction * Output Compression Limiting (AGC-O) * Adjustable Switch Tones * Low Battery Warning Use 312A battery Height:1.12' Memory Switch Telecoil Function One set of Dome&Tube