Specification: Item Type: NFC Bluetooth Receiver Material: ABS Bluetooth Version: 5.0 Transmission distance:≤10M Audio interface: 3.5 + 2RCA Item Size: 60 * 60 * 20mm Package List: 1 * NFC Bluetooth Receiver 1 * 3.5MM Audio Cable 1 * 2RCA Audio Cable 1 * Charging Cable 1 * User Manual 1. [High-quality music] This Bluetooth receiver is equipped with a Bluetooth 5.0 chip module, using the new current acoustic isolation technology, so that your traditional speakers can wirelessly transmit high-quality sound without delay. Support up to 10 meters / 33 feet connection, control remote playback of music. 2. [Simple and convenient] It can be started by car without battery. After the first connection, the vehicle will automatically connect to the next power source. 3. [Universal Compatibility] This Bluetooth 5.0 receiver can be connected to any power speaker with a standard 3.5 mm port or 2 RCA port, very suitable for home theater, stereo and car speakers, as well as smart phones, iPod Touch, compatible with iPhone, compatible with iPad and Android devices [Note: This is just a receiver, not a transmitter] 4. [Dual device connection] Two speakers play music at the same time: 3.5mm and 2 RCA connection options, you can wirelessly play music on two speakers at the same time. It can also connect two Bluetooth devices at the same time; enjoy free music or phone calls from either of the two matching devices 5. [High-quality after-sales service] We cherish every user experience and provide 7*24 hours service guarantee. You can contact us at any time through the channel on the Amazon website.