Ugreen Bluetooth AUX Adapter Built-in Battery, Support Dual Pairs Bluetooth 5.3 Receiver for Old Stereo Receiver, 3.5mm/ RCA Dual Channel Bluetooth Audio Receiver Adapter for Home Stereo Speakers

There are 3.5mm or RCA output port for home old stereo speakers/wired headphones and more to connect mobile phones, computers, tablets to play music via Bluetooth. Turning ordinary audio equipment into Bluetooth devices and enjoying the music feast.