Welcome to our shop! This Bluetooth Transmitter Receiver is designed to convert wired audio into Bluetooth signals and transmit them to Bluetooth devices for output in TX mode. In RX mode, it receives Bluetooth signals and transmits them to wired audio via Bluetooth connection. It is compatible with all kinds of old audio devices and supports low latency for CD-level HIFI stereo quality. The built-in 300mAh rechargeable lithium battery allows for charging while using. The device also features a HIFI audio output interface with dual fiber interface, 3.5mm audio interface, and RCA red-white conversion interface, making it compatible with different power amplifiers and audio equipment. Equipped with the new version of Bluetooth 5.0, this Bluetooth Transmitter Receiver offers more stable transmission and firmer signal, ensuring a seamless Bluetooth transmission/reception experience. Included in the package are 1 x Optical Cable, 1 x 3.5mm Audio Cable, 1 x 3.5 to 2RCA Audio Cable, 1 x USB Charging Cable, 1 x Manual, and 1 x Bluetooth Adapter. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.