BT-02 wireless audio amplifier with a clear case design, compatible with USB connection. This amplifier allows you to convert wired earphones/headphones to Bluetooth. It produces a rich, full-bodied sound. I obtained this at an event, but I'm selling it because my taste in sound has changed. - Model Name: BT-02 - Type: Wireless Audio Amplifier - Design: Clear Case - Connection: USB Connection Original price: 16,500 yen Thank you for viewing.