2-in-1 Bluetooth Transmitter Receiver:In TX mode, Bluetooth Transmitter connects non-Bluetooth audio sources such as airplanes, TVs, or MP3 players to Bluetooth-enabled speakers, headphones via a 3.5 mm (AUX/RCA) cable. In RX mode, Bluetooth receiver receives audio from a smartphone or other Bluetooth source device and then transmits the audio to non-Bluetooth wired speakers, car/home stereos, headphones via a 3.5mm AUX cable. | Bluetooth 5.3 & Qualcomm Chip: The Bluetooth Audio Adapter boasts state-of-the-art Bluetooth 5.3 technology and a Qualcomm chip, providing robust support for a wide range of Bluetooth audio coding protocols, including SBC, AAC, aptX, aptX-LL, aptX-HD. This dynamic combination delivers exceptional decoding capabilities, ensuring high-fidelity stereo sound quality comparable to CD-level standards. | Support for TX aptX-LL Low Latency:The airplane Bluetooth adapter features support for aptX-LL low-latency decoding technology (<40ms) in TX mode, ensuring a true synchronization of sound and picture. Additionally, with Dual Link AptX Adaptive, Low Latency for Flight, Travel, if you encounter significant delays, please first check the audio source and ensure that your device also supports aptX-LL. | Safety First and Long Battery Life:The Bluetooth audio transmitter meets global quality standards, certified by FCC, CE, RoHS, BQB, and more. It ensures safety with features like voltage endurance, overcurrent, short circuit, and NTC overheat protection. With a full charge, it runs for over 24 hours and charges in just 2 hours using the provided Type-C cable. | Dual Link & Portable Gadget:In TX mode, the transmitter can simultaneously connect to two stereo Bluetooth speakers or stereo Bluetooth headphones. In RX mode, the receiver can concurrently connect to two Bluetooth-enabled smartphones or computers.Weighing only 0.7 ounces and with a lanyard, it's very easy to carry and definitely a quality companion for boring long distance flights.