An in-ear hearing device having an ear interfacing portion integrally formed with an elongated stem portion, wherein the ear interfacing portion extends away from the elongated stem portion; a first acoustic port formed in the ear interfacing portion; a speaker disposed in the ear interfacing portion and aligned to emit sound from the acoustic port; a plurality of electrical contacts disposed at an end of the stem portion, the plurality of electrical contacts including first and second contacts; a second acoustic port formed at the end of the elongated stem portion between the first and second contacts; a microphone disposed in the stem portion; and a channel that fluidically couples the microphone to the second acoustic port.