The man holding a device and phone, with the text 'Today we're testing the Walabot DIY 2 to see what it can detect behind drywall.'

A man in a green t-shirt stands in a workshop, holding a device and a smartphone. He demonstrates how the device connects to the phone and is used to scan a piece of drywall. The phone screen shows a radar-like interface. He then places the device on the drywall and moves it, showing the phone detecting a small animal (a mouse) behind the wall. He marks the location on the drywall and continues scanning, confirming the detection. He then demonstrates detecting pipes, wires, and wooden studs. The video ends with the man holding the device and phone, and a shot of the mouse in a clear enclosure.