Check the listing for details. Bluetooth Audio Adapter for Music Streaming Sound System, Wireless Audio Adapter. Color: Black, Condition: New, Made in China. Listed at 37.97 USD. Product Description Listen music wireless: Connect with computer speakers, home stereo systems or other speaker systems via the 3.5 mm or RCA cable, then pair with the Bluetooth audio devices such as smartphones or tablet for streaming music. Easy setup and automatic reconnect: Pair your device to the adapter once with a single button press. It can reconnect automatically with the previously paired device. Wireless range: Indoors(without obstacles) connect rang up 30-40 ft (10-12 m). Works with most device: Bluetooth enabled device including smartphones, tablets, computers, laptops upon and any powered PC speakers, home stereo systems and A/V receivers. NOTE: This adapter doesnt have built-in battery, power by AC to DC power adapter or USB cable. This product is a bluetooth receiver ONLY, not a bluetooth transmitter. Only to give Bluetooth capabilities to an existing stereo / powered speaker / PA. Easy to Setup Pair your Bluetooth enabled devices to the Bluetooth receiver with a single button short press. Press the bluetooth button to enter the pairing mode. Connect Range This adapter bluetooth reception range up to 10-12 meters (30-40 feet). After a successful connection, it will stay connected. Small This product has a small size and lightweight. Does not take up space. Whats in the package Bluetooth Receiver AC to DC Power Adapter AUX to RCA Audio Cable USB Power Cable User Manual 2023 upgraded (This unit just a bluetooth receiver not a bluetooth transmitter) The top Bluetooth button adds pause and shutdown functions. Click button means START/PAUSE. Hold the button 3 sec means ON/OFF. This unit doesnt transmit Bluetooth signal. Only receives Bluetooth signal from phone media or PC/server music sources How is the volume controlled? This bluetooth receiver doesnt have a volume control. You can control volume from your phone and your amplifier receiver, also set the volume on amplifier receiver then control final volume from phone to turn up and down. Can I transmit music from a CD player to a bluetooth speaker? This is a bluetooth receiving device which hard wires into a non-Bluetooth audio system as an additional input source that receives audio from Bluetooth devices such as your phone or computer .You need a Bluetooth transmitter Whats in the box? 1 x Bluetooth receiver 1 x AC to DC Power adapter 1 x AUX to RCA Audio cable 1 x USB Power cable 1 x User manual