A dark, nighttime video shows a person, likely male, squatting or kneeling next to a body of dark water with a rugged concrete or stone bank. The individual is wearing a dark long-sleeved top and dark pants. They are holding a smartphone, enclosed in a black waterproof pouch, suspended by a lanyard. The phone's flashlight is turned on, emitting a strong beam of light into the murky water as it is slowly lowered. The flashlight illuminates a circular area underwater and creates reflections on the water's surface. The person appears to be observing the phone or the illuminated water. A bracelet is visible on their left wrist, and a small tattoo is on their right hand. The background is completely dark, indicating it is nighttime. The scene suggests an experiment or activity involving testing the phone's waterproof case or using its light to see underwater. No specific text is visible in the video frame.