Features: 1. Eliminates buzzing noise caused by ground loops when the o source and speaker share the same power source, commonly found in car o systems or home stereos when using a Bluetooth receiver. 2. Compatible with any portable device equipped with a 3.5mm o jack, ideal for car o systems or home stereo setups where grounding issues occur. 3. Improves o quality for music and speech with simple plug-and-play operation—no external power or battery required. 4. Ultra-compact design with high-quality construction and sleek appearance, easy to carry and use in multiple settings. 5. This isolator is designed specifically for ground loop noise and will not eliminate other types of interference, such as electromagnetic interference. Specification: The noise isolator is engineered to eliminate humming or buzzing noise caused by ground loops. It enhances o performance with easy setup—just plug in and play. No power supply needed. Its small size, durable build, and clean design make it convenient for use in various environments. Type: Ground Loop Noise Isolator Material: ABS Color: Black Application: Car o systems, home stereo systems o Interface: 3.5mm Isolator Size: Approx. 6 x 2 x 2 cm / 2.4 x 0.8 x 0.8 inch Weight: Approx. 34g / 1.2oz Package List: 1 x Ground Loop Noise Isolator 1 x 3.5mm o Cable Note: The package includes only the ground loop noise isolator and o cable. Other items are not included. Please note that either the new or old version of this product may be shipped at random. Please ensure you are comfortable with this before placing your order.