1. Features: Cassette to MP3 Converter - This cassette recorder can directly transfer old cassettes or tapes to a USB flash drive (NOT included) in MP3 format. The USB flash drive can be connected to other devices to play the recorded music, such as a computer, MP3 player, portable speaker, etc. You can play the tape with this cassette recorder, and the cassette can also be used as a music player. Compatible with Windows XP / Vista / 7 / 8. Easy to use - Plug and play, no disk required. Lightweight and portable. Easy to charge - Supports battery and USB power. 2. Specification: Type: cassette to mp3 converter; Conversion format: mp3; U disk Read: support; Power supply: 5V DC adapter or 2 * AA battery (not included); Material: ABS; Weight: approx. 263g; Size: approx. 110 * 90 * 30mm / 4.3 * 3.5 * 1.2inch. 3. Package List: 1 * Cassette Changer (Cassette Not Included), 1 * Headphone. 4. Note: Please allow slight error due to manual measurement. Thanks for your understanding. 5. This cassette recorder can directly transfer old cassettes or tapes to USB flash drive (NOT Included) in MP3 format. 6. The USB flash drive can be connected to other devices to play recorded music, such as computer, MP3 player, portable speaker, etc. 7. You can play tape with this cassette recorder, and the cassette recorder can also be used as a music player. 8. Plug and play, no disk required. 9. Supports battery and USB power.