Package Contents and Includes: Bluetooth Transmitter and Receiver unit, USBA to USBC cable (30 cm), 3.5 mm metal audio adapter, and user manual. Charging adapter not included. Comes with a comprehensive 2year and dedicated customer support. Our professional team is available to assist with any questions or issues, ensuring a smooth and trouble experience. Four accessory styles are available; choose according to your needs. 2in1 Bluetooth Transmitter and Receiver TX Mode (Transmission): Connect nonBluetooth audio sources such as TVs, gaming consoles, or other media devices via the 3.5 mm metal adapter. Converts wired audio signals into Bluetooth signals, enabling instant wireless playback on Bluetooth headphones or speakers. RX Mode (Receiving): Pair smartphones, tablets, or computers with the Bluetooth receiver, then connect it to car audio systems or traditional home stereos through the 3.5 mm audio port. Transforms wired speakers into Bluetoothenabled speakers for quality wireless music streaming. Bluetooth 5.0 for Stable Wireless Performance Equipped with Bluetooth 5.0 for fast transmission and a stable connection up to a 10meter range. Ensures consistent sound quality during music playback or calls. Operates with reliable connectivity for 4–6 hours on a single charge and minimizes signal interruptions from obstacles such as doors, walls, routers, or other devices. Wide Device Compatibility Features a universal 3.5 mm auxiliary input/output for connection to a broad range of audio devices. Compatible with both modern and older equipment including TVs, car audio systems, projectors, and speakers. Works with Bluetoothenabled smartphones, including iPhone models, and Bluetooth headphones. The included 3.5 mm metal adapter supports multiple configurations for versatile use. Enjoy Wireless Music Anywhere with Long Battery Life In receive mode, stream music from your mobile device to wired speakers. In transmit mode, send audio from wired devices to Bluetoothenabled receivers such as headphones or portable speakers. Eliminates the inconvenience of tangled cables for more freedom of movement. Builtin protections against overcurrent, short circuits, and overheating ensure safety during operation. Recharges quickly in approximately 1.5 hours with the TypeC cable provided, delivering up to 4–6 hours of use per charge. Practical Use Scenarios 1. Connect to your TV in transmit mode to enjoy latenight shows or movies wirelessly through Bluetooth headphones without disturbing others. 2. Upgrade a car stereo by connecting the device in receive mode to stream music directly from your smartphone without cables. 3. Transform traditional home speakers into modern Bluetooth audio systems, enabling convenient definition music playback from various devices.