Audio Adapter: Transmitter (TX) and receiver (RX) design, easy to switch.Stable Connection: The transmitter receiver uses V5.3 chip design, lossless stereo, low latency, stronger stability, 30 meters stable transmission. Compact size, easy to carry.Multi Interfaces: The adapter comes with a 3.5mm AUX/RCA interface, making it compatible for various devices. It operates within a range of 2400MHz-2483.5Mhz and can transmit signals up to 30 meters away. Can be connected to a variety of devices, including power amplifier, speakers, etc.Easy to Use: The audio adapter is fast and easy to connect when the mobile phone is close to it. It supports multiple audio codecs including /-/-ll/SBC/AAC, delivering high fidelity sound from 20Hz to 20kHz frequency response.Wide Application: The transmitter receiver can easily support all kinds of audio equipment, suitable for smartphones, tablet, speaker, computers, notebooks, headphones, etc. Size Chart: 8.6cmx7.8cmx2.3cm/3.39inchx3.07inchx0.91inch Package Includes: 1 Audio Adapter1 Data Cable1 Aux Audio Cable1 RCA Audio Cable1 English Instruction Manual Note: Please allow slightly errors 1-2cm differences due to manual measurement.