The little plastic casing on one earpiece is popped off, and replaced with a 3D-printed version that stoutly holds a female TRS jack in place.

The little plastic casing on one earpiece is popped off, and replaced with a 3D-printed version that stoutly holds a female TRS jack in place.

Before starting, a quick rundown of some other Nokia models of pop port headphones and audio adapters include: Nokia HS-3 "Nokia Stereo Fashion Headset" white or black, smaller push to talk unit ...