EXPAND YOUR OLD AUDIO SYSTEM: The Bluetooth adapter uses low-latency Bluetooth 5.0 technology to wirelessly transmit high-quality audio signals from your mobile phone, tablet, or PC to any home audio system. 2-in-1 Bluetooth transmitter/receiver: The Bluetooth adapter supports audio transmission to headphones via the transmitter (TX) and to the car radio or stereo system via the receiver (RX). The transmission range of the Bluetooth adapter is up to 10 meters (unobstructed). LONG PLAYBACK TIME AND EASY SETUP: The stereo Bluetooth receiver lasts up to 10 hours on a single charge (a full charge takes only 2 hours), and setup is very easy – just plug in, pair, and go. EXCELLENT SOUND: The sound quality is not affected. Easy switching between Bluetooth transmitter and Bluetooth receiver mode. Provides a richer and deeper sound experience. You can enjoy high-fidelity sound quality. HIGH COMPATIBILITY: The Bluetooth audio adapter has two connectors. Supports all stereo systems with jack or RCA connectors. Automatically turns off after 10 minutes without a Bluetooth connection, ideal for home and car audio systems. PACKAGE INCLUDED: 1x Bluetooth auxiliary adapter, 1x USB charging cable, 1x RCA cable, 1x 3.5 mm audio cable, 1x user manual. Compatible with Android, iOS system mobile phones and tablets, and all Bluetooth audio devices, stereo devices with audio input jacks. 2-in-1 FUNCTION: Transmitter and receiver for versatile audio devices. AUTOMATIC SHUT-OFF: Saves energy and extends battery life. LONG RANGE: Up to 33 meters for flexible use. WIDE COMPATIBILITY: Can be used with many devices for flawless transmission. MODERNIZE YOUR STEREO SYSTEM: Enjoy wireless music from various sources.