Features: Say goodbye to annoying buzzing sounds caused by ground loops with this audionoise isolator. Enjoy clear voice and music without any external power source. Perfect for car audiosystems and home stereo. This small lightweight noise isolator is designed to eliminate current noise in car speaker and home stereo system. Simply pluginto any portable device with a 3.5mm audio jackand experienceclear audio like never before. Designed for both men and women, this noise isolator is suitable for anyone who wants to get rid of the hummingsound caused by ground loops in their car or home audio systems. Enhanceyour listeningexperience with this easy to use device. Whether you're driving on the road or relaxing at home, this noise isolator is the perfect companion for your car audio systems or home stereo. Say goodbye to annoying buzzing noises and enjoy high quality audio. Experience the true beauty of music and voice with this innovative audio noise isolator. No more distractions from ground loop interference for clear and crispsound. Specifications: Size:approx 3.5mm Audio Noise Filter Size：approx 62x21mm/2.44x0.83in Material： Plastic Package Includes: 1PC 3.5mm Audio Noise Filter note: Due to the light and screen setting difference, the item color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.