The USB-C Jack 3.5mm adaptor is a must-have if your favourite headphones come with a 3.5mm jack input, and your source device features a USB-C input. With this adaptor, there s no need to swap your headphones when you want to enjoy music, podcasts, or take calls. This adaptor effectively tackles the issue of mismatched headphone sockets and a smartphone or other devices with only a USB-C input.