Characteristics and Interoperability Operation Car wireless, Bluetooth 5.0, CD audio quality, hands-free interface MP3/MP4 Players, FM Transmitter, USB, AUX, and Audio Tuner ports Origin Country: China; Brand Name: EARLDOM Material: TPE and aluminum alloy Bluetooth version: 5.0; Bluetooth connection range: ≤10m; Wide compatibility: smartphone, tablet, laptop, amplifier, headphone, car audio system, MP3