Andoer Mini Portable Bluetooth 3.0 Stereo Audio Music Receiver Adapter with 3.5mm Audio Port USB US Wall Charger After the Bluetooth Receiver was connected with the Ordinary Speaker via the included 3.5mm audio cable, the Ordinary Speaker is turned into Bluetooth-enabled Speakers. With the Bluetooth audio Receiver, you can wirelessly enjoy music from your wired speaker, meantime, its USB port can constantly keep your mobile devices powered. Elegant and fashionable appearance, simple and easy design, compact and portable. Perfectly suitable for any speaker with 3.5mm audio interface. Extra USB port provides fast charging to your USB-enabled mobile devices.