This is the Depstech WF010 wifi endoscope (or more accurately, borescope) - currently available on Amazon for DIRT cheap @ less than £30!!
With such a low price, can it be any good?
This review is documented on the website: zxcxz.com/depstech-wf010-wifi...
It's available on Amazon:
amzn.to/33dTkDM (US)
amzn.to/2tdumnV (UK)
The double AA rechargeable batteries used in this video:
amzn.to/2oGOHmJ (US)
amzn.to/2E84y2K (UK)