1?��TAPE TO MP3 FORMAT: The tape to MP3 converter converts tapes to MP3, quickly converts old tapes to MP3 format, suitable for portable CD record carving machine. 2?��AUTO REVERSE: The portable bluetooth cassette player has an automatic reverse function, you can use the "DIR" button to quickly flip the tape, and use the left or right "play mode" button on the left or right side to rewind once or an unlimited number of times. 3?��COMPATIBLE WITH 5MM AUX JACKS: The portable tape to MP3 converter works perfectly with any standard 5mm AUX jack, so you can use the sound port on your headphones, earphones, or car speakers. 4?��CLEAR SOUND QUALITY: The cassette to MP3 converter can provide crystal clear sound from even the oldest bands when transferring tape to MP3 in a quiet room. 5?��COMPATIBLE WITH STANDARD HEADPHONES: The portable tape to MP3 converter has a lightweight and compact size that is more than just a recorder and works perfectly as an old-fashioned music player with any standard headphones.