MP3 format conversion via Type-C: Quickly convert old cassette tapes to MP3 using a Type-C connection; suitable for laptops and CD engraving machines. Auto rewind: The device features automatic rewind; use the DIR button to flip the tape and the left or right playback mode buttons to rewind once or infinitely. 3.5mm jack compatibility: Works with any standard 3.5mm aux jack; compatible with headphones, earbuds, or car speakers. Clear sound quality: Delivers clear sound from older recordings by transferring cassette audio to the MP3 player in a quiet room; suitable for different scenarios. Use scenarios: - Digitize a cassette collection for portable listening or archival on MP3 players or computers. - Create digital copies for CD burning or sharing. - Listen through headphones, earbuds, or car stereo after conversion.