Wireless Bluetooth connection: This BT cassette player streams cassette audio wirelessly to Bluetooth headphones or speakers, eliminating the need for wired devices and enabling convenient wireless listening. Flexible power options: Powered by 2 AA batteries or USB, offering versatile power supply methods to suit different situations and needs. Auto reverse function: The autoreverse feature lets you choose to listen on one side or both sides, with simple and convenient operation. sound: Bluetooth transmission lets you stream your cassette audio without wires; actual sound quality depends on the cassette condition and Bluetooth pairing, delivering a listening experience within those constraints. Compatibility and performance: Compatible with standard Bluetooth headphones and speakers; performance depends on cassette tape quality and the listening setup. Use scenarios: At home or in a office setting, listen wirelessly with Bluetooth headphones or speakers for a clutter setup. While traveling or outdoors, use USB power or AA batteries for flexible operation. In small group settings such as classrooms or workshops, share cassette audio via Bluetooth speakers for easy playback.