A KEY Click switch Bluetooth, insert card, radio Double-click to call back Long Press for switch machine B KEY Answer or refuse to answer Click to pause/play Volume up, volume down Spin TF card TYPE C CHARGING PORT It adopts 40mm-HIFI dynamic coil speaker with high dynamic sensitivity, high fidelity and other characteristics. Not apple headphones (important). they are just in the apple box. Similar model and function, and still work. Support AAC/SBC advanced audio decoding mode,enjoy the professional-grade music sense of bass, thick and hoting /medium-frequency level CLEAR/HIGH PITCHED NO RETURNS OR REFUNDS
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