The basic electronic components for the microphone circuit (shown above).  The yellow object is a 10 uF tantalum capacitor (C2), The small red object to its right is a .1uF ceramic monolithic capacitor (C1).  The next object to the right with the obvious two orange stripes and one red stripe is the 3300 Ohm resistor (R1).  The curling black and red wires connect to a snap on connector for a nine volt battery.  The red and gray wires connect to a microphone element  (an old RadioShack model) and the square object with the holes is the optional circuit board.