The endoscope is a long wire with a lighted camera on one end and a Wi-Fi box on the other.
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All you do is download the Wi-Fi app, and it opens up and connects automatically.
Let's say you lose your keys under a desk or someplace that's really tucked away.
You can't see underneath there, so you want a camera that can.
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Once you turn on the Wi-Fi box, it connects to the app. The lighted camera lets you look underneath things while you look at your phone.
The endoscope costs anywhere from $15-$25 on Amazon or other shopping sites.
I think it's totally worth it!