Experience seamless wireless audio with this Bluetooth 5.0 2-in-1 Transmitter & Receiver. Enjoy lossless sound quality, hands-free calling, and true plug-and-play convenience through the 3.5mm AUX interface. In TX mode, convert wired audio from TVs, PCs, or devices into Bluetooth signals for wireless headphones. In RX mode, turn non-Bluetooth speakers or car stereos into wireless systems. Perfect for late-night TV watching, car audio, and home speakers. Built-in rechargeable battery provides up to 4 hours of use per charge.