1. Project Type: Cassette Tape Player Material: Plastic, Electronic Product Recording Format: WAV, MP3 Power Supply: 2 AA Batteries (Not Included) or USB Port Power Supply 2. Cassette-to-MP3 Converter: Our unique cassette tape player can quickly convert old cassette tapes to MP3 format via a USB cable, transforming cassette tapes into digital files. It is also compatible with laptop CD recorders. 3. Detachable External Speaker: The upgraded cassette-to-MP3 converter comes with a detachable external speaker. The high-definition sound quality allows you to enjoy nostalgic melodies with your family and friends. The detachable design saves space for your travels. 4. Multifunctional Player: It can be used as a cassette tape player and can also play music perfectly through a 3.5mm headphone or a 3.5mm AUX jack in a car, including soundbars (headphones are included). 5. Compatible Operating Systems: Our cassette player is compatible with Windows XP, Vista, Windows 7, and versions of OS X prior to 10.5. When converting cassettes to MP3 in a quiet room, you can enjoy clear sound quality even with the oldest tapes. 6. Portable and Convenient: Its compact and lightweight design makes it easy to carry, making it ideal for use at home or on the go. It allows you to record in WAV and MP3 formats, giving you the flexibility to choose the format that suits your needs. Package Includes: 1 x Cassette Player 1 x Detachable Speaker 1 x Software CD ROM 1 x Power Cord 1 x Instruction Manual If the speaker doesn't work, make sure it is rotated to the correct position.