Portable Cassette Player with MP3 conversion Core benefit Play your vintage cassette collection and preserve it by converting to MP3, saved on a MicroSD card. What it does Converts cassette or tape to MP3 and stores the file on a MicroSD card. How to use Two conversion modes available: Manual Mode and Auto Mode for converting cassette/tape to MP3. Playback and connection options Listen using headphones, through a builtin speaker, or via a car stereo. 3.55 mm AUX jack to connect to the converter; plug in the jack and power on to start. Compatibility and storage Compatible with standard cassette tapes. MP3 files are saved to a MicroSD card for easy transport and archiving. Practical use scenarios Home digitization: convert a nostalgic cassette library to MP3 and store on MicroSD for easy playback on portable devices. On the go listening: use headphones or a small speaker to enjoy cassettes without a computer. Car audio playback: connect the device to a car stereo via the 3.55 mm AUX for road trips or daily commutes.