Bluetooth 5.1 Receiver - 3.5 mm AUX Adapter This compact Bluetooth receiver turns any 3.5 mm AUX input into a wireless audio source for car stereos, speakers, amplifiers, or headsets. If your vehicle or device lacks built in Bluetooth, this adapter lets you enjoy music, make hands free calls, and hear GPS navigation through your existing audio system. It is powered by a DC USB adapter and can be used with a USB port or USB hub on a laptop. Key benefits - Adds Bluetooth to devices without built in Bluetooth, such as older car stereos - Stream music, make hands free phone calls, and listen to GPS navigation through your speakers - Automatic re connection to your previously paired phone for seamless use What makes it stand out - Bluetooth version 5.1 for a stable connection - Easy pairing with the Bluetooth name YP04 - Clear LED indicators: the green light blinks quickly during pairing, then blinks slowly when connected How it works and compatibility - 3.5 mm AUX output compatible with car stereos, speakers, amplifiers, and headsets - Powered via DC USB adapter or connected to a USB port; can be used with a laptop USB hub - Designed to work with devices that do not have built in Bluetooth while providing wireless music playback and calls Use scenarios - In the car: connect to your car stereo via the 3.5 mm AUX input to stream music, answer calls, and use GPS navigation through the car speakers - At home or in the office: connect to home stereo or powered speakers to play audio from a Bluetooth enabled phone or laptop - On a laptop or desktop: use a USB port or USB hub to power the adapter and output audio to external speakers or a headset Specifications and details - Bluetooth version: 5.1 - Output: 3.5 mm AUX - Power: DC USB adapter (or USB port) - LED indicator: green - Pairing name: YP04 - Automatic reconnection: yes - Applications: car stereo, speaker, amplifier, headset This Bluetooth 5.1 Receiver - 3.5 mm AUX Adapter provides a straightforward, reliable way to add wireless audio capability to non Bluetooth devices, with simple pairing, stable connection, and convenient auto reconnect for everyday use.