2N3904 NPN General Purpose Transistor
Tact Switch 6x6mm 11mm Through Hole SPST-NO
Mylar Speaker 8 OHM 1W
10K OHM 1/4W 5% Carbon Film Resistor
240K OHM 1/4W 5% Carbon Film Resistor
2 x AA Battery Holder
UM3561 UM3561A Audio IC