1. Versatile Playback Features: This cassette player includes fast forward and rewind functions for easy navigation. Its magnetic head and motor ensure smooth, reliable playback without tape tangling or sticking. 2. MP3 Conversion Capability: Convert cassette tapes to digital MP3 files using the built-in USB-C interface. Connect to a computer and use compatible audio software (e.g., Audacity) to digitize your tapes. 3. Portable Recording Function: Record voice notes or other audio directly using the built-in microphone. Includes a 3.5mm headphone jack for private listening; headphones are included. 4. Flexible Power Options: Powered by either a 5V USB-C power source (cable included) or two AA batteries (not included). Do not use both power sources simultaneously. 5. Compact and Portable Design: Lightweight and compact (10.4 x 8.9 x 3.6 cm / 4.1 x 3.5 x 1.4 in), it fits easily into bags for on-the-go use. Simple controls with intuitive operation. Portable Cassette Player with Built-in Microphone, USB-C Interface, and Headphones Item Type: Cassette Player Audio Output: 3.5mm headphone jack USB-C Port: For data transfer (MP3 conversion) and 5V power supply Headphone Impedance: 32Ω Headphone Output Level: 30–80 mV at 6.3 kHz Tape Speed: Standard (4.76 cm/s) Wow and Flutter: ≤0.4% at 3 kHz Product Dimensions: 10.4 x 8.9 x 3.6 cm (4.1 x 3.5 x 1.4 in) Power Supply: USB-C (5V) or 2 x AA batteries (not included) Note: Do not record over pre-recorded tapes — this will erase the original content. Color: Black Material: Plastic Package Contents: 1 x Cassette Player 1 x Headphone 1 x USB-C Cable 1 x English User Manual Note: Actual product color may vary slightly due to screen settings and lighting conditions. Dimensions are subject to a tolerance of ±1–3 cm.