Endoscope (Microscope) EndoScope for Android, Purchased in March (￥11,841)

Endoscope (Microscope) EndoScope - For Android/Windows. Purchased on Amazon in March (￥11,841).
2 million pixels, magnification 1x to 200x, 8 LED lights with adjustable brightness, adjustable focus.
USB endoscope with OTG adapter, capable of video and still image capture, waterproof.

For the driver software, I used the USB Endoscope app Android 10+ from Google Play.
To use features like high magnification, a one-time optional fee of approximately ￥1000 is required.
I tried other apps, but this one was the best for my needs.

The Android smartphone, round gold stand, and subject shown in the photos are not included. (Comes with a chrome-plated flexible stand.)
There was no instruction manual included at the time of purchase. Explanations (in English) appear within the app.
Once you open the app on your smartphone and connect the Type-C connector of the OTG adapter, the camera's LEDs will light up, and the camera video will be displayed on your smartphone. I didn't do much video recording, but still images can be saved using the camera icon.
For my purposes, I used it to inspect the wear on the gears of mechanical watches at high magnification.
To exit the app, press the back button, and the exit button will appear.

End of description.