Dual Function Bluetooth Transmitter & Receiver: Easily switch between transmitter and receiver modes with just a quick press of the button. In transmitter mode (red light), it connects seamlessly to TVs, projectors, and MP3 players, delivering audio wirelessly to Bluetooth headphones or speakers. In receiver mode (blue light), it turns any car audio system, HiFi, or wired headphones into a Bluetooth-enabled device for streaming music and calls. Advanced Bluetooth 5.3 Technology: Featuring the latest Bluetooth 5.3 version, this airplane bluetooth adapter offers faster data transmission, a stable connection with minimal interference, and a wider operating range. The bluetooth 5.3 transmitter receiver 2 in 1 enhanced performance means lower latency, making wireless flight adapter perfect for watching TV or playing games without audio lag. Universal Compatibility & Wide Application: Aux wireless adapter compatible with a broad range of devices, including smartphones, laptops, Bluetooth speakers, car stereos, Bluetooth headphones, and amplifiers. Whether you need it for your car, home HiFi system, or portable speakers, this Bluetooth adapter ensures seamless connectivity with virtually any Bluetooth device, bluetooth transmitter for headphones ensuring maximum versatility. Built-in Battery with Extended Playtime: The Bluetooth transmitter receiver has a rechargeable battery that lasts up to 6 hours in receiver mode, ensuring long listening sessions. It can also be used while charging, making it perfect for extended use on long trips or at home. The charging time is fast, taking only 1 hour to reach a full charge.