The high-quality shielded SC4 adapter cable is designed for connecting microphones with a 3.5mm output to TRRS smartphones and tablets. It is perfect for connecting the VideoMic microphone to an iPhone and recording with sound recording apps for iOS. The contacts are gold-plated and color-coded. The gray color indicates the TRRS output. Although the SC4 is designed to work with Apple iOS devices such as iPhone and iPad, it is also compatible with most Android devices. Please note that the SC4 is compatible with stereo microphones, and the left and right channels are combined into a mono signal for compatibility with TRRS connections.