2-in-1 Transmitter Receiver: The device supports both transmit and receive modes. In transmit mode, the Bluetooth transmitter connects to non-Bluetooth audio sources (Bluetooth speakers and headphones) via a 3.5mm (AUX/) cable. In receive mode, the Bluetooth receiver receives audio from a smartphone or other Bluetooth audio source device, and then transmits the audio to non-Bluetooth wired speakers, car/home audio via a 3.5mm AUX cable. Bluetooth 5.2 Chip: This Bluetooth audio adapter uses an advanced Bluetooth 5.2 chip to provide powerful support for multiple Bluetooth audio coding protocols. This dynamic combination provides excellent decoding capabilities and ensures high-fidelity stereo sound comparable to CD quality standards. Compatibility: The A5 Pro is equipped with dual 3.5mm aviation headphone adapters, which are compatible with any aircraft regardless of the audio output jack type. It can also work seamlessly with any device that outputs audio via AUX, such as tablets, PCs, fitness equipment, etc. EASY SETUP, FAST PAIRING: Our Bluetooth adapter has a clear indicator light to easily display the mode status and a reset button to easily reconnect and solve compatibility issues. This device is an ideal must-have for your flight travel. PORTABLE AND LONG BATTERY LIFE: Compact design, built-in 300mAh battery, can be used while charging, up to 12 hours in TX mode, up to 10 hours in RX mode. Bluetooth working distance is about 15 meters/50 feet. NOTE: To enter pairing mode, make sure your for are in the for charging case. We recommend that you turn off nearby Bluetooth devices, such as mobile phones or iPads, during pairing and use. To minimize latency, make sure your device supports Bluetooth 5.2 and low latency technology. Colour:Black Material:plastic Package Contents: 1 x Bluetooth Transmitter 1 x Airplane Adapter 1 x 3.5mm female to female adapter 1 x English instruction manual 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.