Answer: Explanation for those who haven't seen it yet ? sandal
The joke here is that the "strange-looking" object the person is holding isn't a high-tech gadget or a mysterious device, but something totally unexpected and mundane — a sandal!
Instead of using a camera or phone, he's humorously holding up a sandal as if it's a camera. It’s an intentionally silly image that plays with our expectations and makes people do a double-take, especially when they're expecting to see some sort of advanced or unusual equipment.
