Features: Say goodbye to annoying buzzing sounds caused by ground with this noise filter. Enjoy clear voice and music without any external powers. Perfect for car accessories. This small lightweight filter is designed to eliminate current noise in speakers system. Simply plug into any portable device with 3.5mm jacks and enjoy clear sound. Suitable for use with any portable device with 3.5mm jacks. Whether you on travel or relaxing at home, this filter is the perfect accessory for your car system. Say goodbye to annoying buzzing noises and enjoy high quality sound. Experience the true beauty of music and voice with this innovative filter. No more distractions from ground for clear and crisp sound. Specifications: Material:Aluminum Alloy Size:Approx.60x23.7x16.5mm or 2.36x0.93x0.65in Ground Loop Noise Isolator Works with 3.5mm jacks devices Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xGround Loop Noise Isolator 1x3.5mm Cable