Features: 1. Type-C 5V Power Supply, Built-In Common Ground Interference Processing Circuit To Ensure Stable Sound Output2. Upgrade The Bluetooth Speaker, The Speaker Without Bluetooth Function Can Also Achieve The Effect Of Wireless Playback3. Upgrade The Bluetooth Power Amplifier, Connect The Power Amplifier With Rca Interface, Make Use Of Equipment, And Enjoy High-Quality Music4. Upgrade The Car Bluetooth Speaker, Plug It Into The Car Aux Port, Use The Mobile Phone Bluetooth Connection To Listen To Music Wirelessly, And Let The Car Audio Cheer Up5. Bluetooth 5.3, No Freeze When Listening To Music, Professional Audio Dsp ChipDescription:1. Input Voltage: DC 5V2. Product Name: Bluetooth Audio Receiver3. Interface Type: Aux+Rca4. Bluetooth Version: Bluetooth V5.35. Product Size: 8.3 x 5.6 x 2.5cm6. Bluetooth Protocol: A2DP AVRCP7. Transmission Distance: 10m Without Obstacles8. Music Format: MP3/APE/FLAC/WAV/WMA9.Color: Black10.Material: ABSPackage Contents:3 x Receiver3 x Chinese And English Manual3 x Type-C Power Supply Cable3 x AUX Audio CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.