Works with any portable device that has audio jacks, for your Car Audio System/Home Stereo. Easy to use, just plug and play, no battery required. Small and portable, this gadget doesn't take up much space and is easy to take away. Name: Audio Noise Reduction Isolator Input: 2 male jacks Output: 2 female jacks Can also be used with either input or output Input/Output Impedance: 600Ω/600Ω (AC impedance) Frequency Response: 20Hz-20kHz (<0.2dB at 1kHz) Nominal Loss: <0.7dB (at 1Vrms at 1kHz) Insulation Resistance: DC 1000V, 100Ω Isolation Voltage: AC 50Hz-60Hz, 0V-1500V Color: As Shown Material: Aluminum Alloy + Braided Wire Package Contents: 1* Audio Isolator Only 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.