Direct USB Recording, No Computer Needed – Easily convert your favorite cassette tapes into MP3 files directly onto a USB flash drive (USB not included). No PC or software required. Dual Power Options – This cassette to MP3 converter runs on 2 * AA batteries (not included) or via the included DC 3V USB cable, giving you flexible use at home or on the go. Multi-Functional Cassette Player – Works as both a cassette tape player and cassette to digital converter. Features built-in dual speakers, a 3.5mm headphone jack, and comes with over-ear headphones for private listening.