1. Brand new private model design with independent appearance patent intellectual property rights;

 2. Support type-c interface device to transfer DC3.5 wired headphones to listen to music, line control, call, U shield and other functions (does not support Apple's original 3.5mm headphone line control function);

3. Use marble DC3.5 female socket to further increase the number of plug-in and unplug times and increase service life;