Cassette Tape Recording - Record from the built-in microphone to a cassette tape or USB flash drives Record to USB - Digitally Convert cassette tapes to digital files to a USB flash drive (not included) Microphone Input - Supports external microphones (3.5mm MIC input) Headphone Support - Enjoy private listening sessions with the 3.5mm headphone jack Built-in speaker - Enjoy listening to your favorite cassette tape tracks Additional Cassette Feature - Cassette player with auto-stop Power Versatility - Take the cassette player on the go with 4 x C batteries (not included) or connect the AC adapter to an outlet Speaker Type: Mono Disc/Tape Support: Auto-Stop cassette Removable Memory Support: USB Record/Play Formats: MP3, Cassette Input: Built-in microphone, 3.5 mm MIC line, 3.5 mm AUX audio Power Source: AC 120V adapter (DC 6V), 4 x C Batteries (not included) Accessories included: AC power adapter, User manual