All units come with: Compact hard-shell carry case, #312 battery, cleaning tool, three size Comply Foam Tips N- 50, user’s Manual and ear plug. The Pro Hear IV is our top of the line digital BTE hearing amplifier. The sleek, rugged, design and lightweight feel provides maximum comfort with the ultimate performance. The PRO HEAR IV Digital produces smooth, natural CD quality sound Multi-memory programming allows you to instantly select different modes for specific sound environments. The WDRC compression and four pre-programmed memories combine to give excellent sound quality with low distortion and maximum safe amplification. The PRO HEAR IV is tuned to your needs for high and low frequency enhancement and a memory beep mode between settings. The Pro Hear IV provides so much of an advantage it is almost unfair to the animals.