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Of course, the headband is made from high-quality stainless steel. Simply adjust them by straightly bending out the headphone.
Please check the following points:
1) Make sure all input and output cables are correctly connected
2) Make sure the mic input is clear and in well-order
3) Check your device to see whether it is in good condition
4) Make sure the volume isn't at the min. level
If the issue still exists, please try to restart your device.