1. Versatile Playback Features: This cassette player comes with fast forward and rewind capabilities, allowing you to easily locate your favorite tape music quickly. With its magnetic head and motor, it ensures smooth playback without worrying about your tapes tangling or sticking.2. Easy Conversion To MP3: The tape player supports two methods for converting cassette music to MP3. You can effortlessly turn sound tapes into digital files or use the included APP for Audacity via USB cable to convert tapes to MP3 format, preserving your cherished music collection in modern digital formats.3. Portable Recording Capability: This multifunctional portable cassette player can also be used for recording, making it easy to catch your thoughts and important notes anytime. Equipped with a 3.5mm headphone jack, you can enjoy music in your room or outdoors, with headphones included.4. Flexible Power Options: Featuring two charging modes, you can plug into a 5V power source indoors using the included USB C cable. , use two AA batteries (not included). These flexible power options cater to various needs, but please avoid using them simultaneously.5. And Compact Design: The cassette player tape recorder is and compact, fitting comfortably in any bag, allowing you to enjoy music anywhere. It's a dependable companion for daily use, with straightforward operations and no complicated buttons.Portable Cassette Player Cassette Recorder Built in Mic USB C Cassette Tape to MP3 Converter Cassette Tape Player with HeadphoneItem Type: Cassette PlayerSound Port: 3.5mm sound interfaceUSB C Power Data Transfer Port: USB link to computer for cassette conversion interface and USB 5V power supplyHeadphone Impedance: 32ΩHeadphone Output Power: 6.3KHZ 30mV to 80mVTape Speed: 2980HZ to 3080HZFlutter: 3KHZ 0.4%Product Size: . 10.4x8.9x3.6cm/4.1x3.5x1.4inHow to Use:Install batteries for use.Note:Please do not