The CASR101 is a cassette player/recorder designed in a "shoebox" style. It comes equipped with a top-loading cassette deck that can both play and record. The unit also features a retractable carrying handle for easy portability. The buttons are user-friendly, including a one-touch record button and automatic voice level control. You have the option to record using the built-in microphone or the external microphone that comes with a desk stand. The CASR101 also has a headphone jack for private listening and an auxiliary line-in jack for attaching other players. The unit can operate on either four "C" size batteries (not included) or with the included AC adaptor.