I had purchased the product from a widely known DIY chain store (25+ years in Greece).
It detects all types of metal as well as wiring inside the wall.
The only difficulty one may face when using it is when placing it vertically on the walls and having to press the two side black buttons with two fingers (thumb-index) in order to activate the display on the device. This may tire some users, while others may not be bothered.
It is quite good considering that it was able to detect even a buried conduit box lid under asphalt, while accredited engineers, despite having better metal detectors (the ones with a rod), could not locate it.
I tried it a second time in a similar situation and it did not disappoint me.
Also, as a negative aspect, I would like to add that it uses a 9V battery.
Personally, I have no problem, but I do encounter several users who have issues with this type of battery, so I thought it would be good to mention it.
That's all from me

It is not particularly reliable, it needs calibration before use and "hits" as if there are cables everywhere on the wall. The included manual is also terrible, if you watch the video tutorial on Stanley's official YouTube channel, you will be disappointed...