TX Mode: Effortlessly upgrade your non-Bluetooth devices with our Bluetooth transmitter. Simply plug it into your TV, PC, MP3 player, or electronic book reader using the AUX or RCA jack. This allows you to transmit sound wirelessly to your Bluetooth headset, speaker, or receiver, providing a seamless audio experience. RX Mode: Transform your wired audio devices with the 2-in-1 Bluetooth transmitter receiver. In RX mode, connect the Bluetooth receiver to your wired speakers or headphones and receive high-quality sound from your smartphone via Bluetooth. This feature breathes new life into your existing audio equipment. TX Mode Application: Enjoy the freedom of wireless audio with the BT adapter in TX mode. It transmits stereo sound from your non-Bluetooth sound sources to Bluetooth-enabled devices, allowing you to enjoy premium music without disturbing others. Perfect for late-night TV watching or private listening sessions. RX Mode Application: Experience CD-like sound quality wirelessly on your home stereo or wired speakers. The Bluetooth AUX adapter converts your old wired headphones or speakers into Bluetooth-enabled devices, offering a modern audio experience without the need for new equipment. Long Battery Life: Stay connected longer with a built-in battery that supports 8 to 12 hours of operation per full charge. The Bluetooth transmitter receiver charges via USB cable and can operate while charging, ensuring uninterrupted audio enjoyment throughout the day. Upgrade your audio setup with this versatile Bluetooth Transmitter Receiver 2-in-1 USB Charging Wireless AUX Adapter, designed to enhance your listening experience across a variety of devices.