About this item EASY TO USE: Connect the audio receiver to your computer speakers, home stereo system or other speaker system via a 3.5mm AUX or RCA cable, then pair it with a Bluetooth-enabled audio device, such as a smartphone or tablet, to enjoy your music wirelessly! Device Features:B21 Bluetooth 5.2 audio receiver is equipped with 3.5AUX, RCA, USB-A, TYPE-C ports, supports two cell phones, hands-free calling, U disk, NFC connection. Support MP3, WMA, WAV, FLAC, APE, SBC, AAC and other formats. ONE-TOUCH SETUP: Pair your audio device with this Bluetooth adapter by pressing the button once. Rebooting automatically reconnects with previously paired devices. Unobstructed frontal wireless connectivity range up to 30-40 feet. Wide range of devices: Bluetooth-enabled devices such as computers, smartphones, tablets, laptops and home stereo systems, active PC speakers and A/V receivers. NOTE: This product is a Bluetooth receiver only, not a Bluetooth transmitter. It is only used to provide Bluetooth functionality to existing stereo/active speakers/amplified devices. The product has no built-in battery and uses Type C charging cable as the power cable, which is universal with cell phone charger. This product includes: receiver + AUX audio cable + RCA audio cable + Type C charging cable + manual. › See more product details