The video shows a person using a soldering iron to solder wires onto a circuit board. The person is holding the soldering iron with one hand and the circuit board with the other. The soldering iron is heated and applied to the wires, melting the solder and creating a strong bond. The person then uses a soldering iron to clean up any excess solder and ensure a clean and precise connection. The video provides a close-up view of the soldering process, highlighting the precision and skill required to create a secure and reliable electrical connection.