Bluetooth-compatible 5.4 Audio Adapter APTX Receiver and Transmitter 2-in-1 Features: 1. This product can freely receive most Bluetooth-compatible audio, allowing you to wirelessly transmit music from your phone or computer to older amplifier-based audio equipment. 2. It can also wirelessly transmit audio sources to Bluetooth-compatible headphones/speakers and other devices. The Bluetooth-compatible audio reception and transmission support one-to-two functionality, perfectly addressing the limitations of audio equipment and expanding the capabilities of various audio devices. 3. This device is plug-and-play, requiring no software installation or drivers, with simple and quick operation. Specifications: Product Name: Bluetooth-compatible audio transceiver Bluetooth-compatible version:5.4 Input power supply:DC 5V Model:BT200 Material:ABS Transmission:About 20m(barrier-free) Charging port:Type-c Product interface:RCA audio, AUX audio Battery capacity:1000mAh Function:Receiving/transmitting, calling Supported devices:Mobile phone/tablet/computer/TV/power amplifier/speaker Size:78* 73* 19mm Package Includes: 1x Transceiver Main Unit 1x User Manual 1x AUX Audio Cable 1x RCA Cable 1x USB Data Cable