t Feature: & 12304;Wake Up The Old Stereo Equipment& 12305; Bluetooth Adapter can be connected to the old non-Bluetooth receiver, wired retro stereo, speaker, wired headset, car stereo via the 3.5mm aux jack, it can save the costs to purchase a new receiver, giving old devices a whole new life & 12304;Enjoy Wireless Streaming Music& 12305; Bluetooth receiver for home stereo features Advanced CSR 5.3 chipset to achieve faster, more stable and longer-range Bluetooth signal receive. Continue and clear HiFi music streaming creates an enjoyable listening experience. & 12304;Supports U-disk Playback& 12305;The Bluetooth adapter for stereo receiver is featured for the U-disk slot. You can choose either to play from your smart device or U-disk No matter whether you are using an old speaker, vintage stereo, or wired receiver, you can easily turn the music into wireless via the 3.5 mm or RCA cables of the Bluetooth audio receiver. & 12304;Easy to use& 12305;Easy plug, pair play. Plug into speakers, home stereo systems, or other car stereos via the 3.5 mm AUX or RCA cable, then pair the Bluetooth receiver with the Bluetooth audio devices such as smartphones or tablets. After that, you can enjoy the music. NOTE: This product is a receiver only, NOT a transmitter. Product parameters: Product Name: Multifunction Bluetooth Audio Receiver Bluetooth Version: V5.3 + EDR Bluetooth protocol: A2DP/AVRCP Bluetooth distance: 10 MetersObstacle-free transmission Interface: R/L 2 RCA/3.5MM AUX/OPTICAL Fibre (Output)/USB U-Disk Product Size:90mm(L)* 77mm(W)* 30mm(H) Package List: 1x Bluetooth 5.3 Audio Receiver Adapter 1x3.5mm TO Audio Cable 1X RCA audio cable 1x Optical Fiber Audio Cable 1x Type-C Power Cable 1x User Manual (Note:U-Disk not included) Bluetooth Mode Playback: 1. First Use a 3.5mm Audio Cable to Connect the Wireless Receiver to the Speaker.then Plug One End Ofthe Charging Cable into the Power Supply and One End Intothe Type-c Charging Port, Short Press the Spin Button for 3 Seconds to Start the Machine; 2. Find "C36" in the Wireless Search of the Mobile Phone, and then Select Pairing 3. After the Mobile Phone is Successfully Paired with the Device, You Can Now Playmusic Wirelessly, and the Unit Can Control the Up and Down Music and Volume; 4. Your Phone is Paired Successfully for the First Time, and It Will Automaticallyreconnect to Your Phone the Next Time You Turn It On. U-Disk Mode Playback:   Reminder: & 9679;Powered By USB Charging (No built-in battery ) We recommend that you use a 5V1A charger to power the adapter to avoid insufficient voltage and current, which may cause current sound or noise when the adapter is in use. & 9679;& 9679;It's a VIKEFON Bluetooth audio receiver only, not a transmitter. Can only be used for audio transmission,So you couldn't use it for your keyboard, mouse, file transfer.