2-in-1 Bluetooth Transmitter Receiver: In TX mode, Bluetooth Transmitter connects non-Bluetooth audio sources such as airplanes, , or MP3 players to Bluetooth-enabled speakers, headphones via a 3.5 mm (AUX/) cable. Bluetooth 5.4 & Chip: The Bluetooth Audio Adapter boasts state-of-the-art Bluetooth 5.3 technology and a chip, providing robust support for a wide range of Bluetooth audio coding protocols, including , AAC, , -LL, -HD. This dynamic combination delivers exceptional decoding capabilities, ensuring high-fidelity stereo sound quality comparable to CD-level standards. Support for TX -LL Low Latency: The airplane Bluetooth adapter features support for -LL low-latency decoding technology (Less than 40ms) in TX mode, ensuring a true synchronization of sound and picture. Additionally, with Dual Link Adaptive, Low Latency for Flight, Travel, if you encounter significant delays, please first check the audio source and that your device also supports -LL. and Long Battery Life: The Bluetooth audio transmitter meets global quality standards. It ensures safety with features like voltage endurance, overcurrent, short circuit, and 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. Color:White Material:plastic Package Contents: 1 * Bluetooth transmitter receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.