There is no soldering, no solder and containing no battery. included: - 47 pages manual booklet - 2 small boards for soldering - Adapter for 9V battery - Some hookup wire - LEDs: 1 red, 1 green - 8 resistors - 1 SMD IC (LM 358) - 1 electrolytic capacitor - 2 ceramic capacitors - 2 transistors - 1 SMD diode T4 - Tiny cylinders without wires (no idea what that is)