Pull the microphone (circular blue part) from its socket by the connected red wire that is covered in black rubber.

Take note of where the microphone is, as you will have to reconnect it.

The wire itself is connected to the battery and will disconnect the battery from the exterior piece of the earcup.

Unscrew the four 5.7 mm screws with a Phillips #00 screwdriver connecting the earcup to the headphone’s frame.

Remove the earcup.