Description: Eliminate buzzing noise, completely eliminate the buzzing noise, caused by ground loops which happens when the audio source and the speaker use the same power source in some car speakers/home stereo systems when using the Bluetooth receiver. Working principle, the working principle of this noise isolator is to achieve a clear speech/music by eliminating the current noise in some car speakers/home stereo systems. Compatible models, works with any portable device that has 3.5mm audio jacks, for your Car Audio System/Home Stereo. When grounding issues persist, also used with a Bluetooth Receiver/Bluetooth Hands-free Car Kit in your Car Audio System/Home Stereo. Compact and portable, mini and light-weight, plug and play, this little gadget does not take much space and can be easily taken away. Specification: Material: Plastic Size Chart: Size: 6.2X2X1.7cm/2.44X2.36X0.66inch Package Includes: 1 Piece Noise Isolator 1 Piece Audio Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!