Inside a heated shower head. (suicide shower)

This device is apparently quite common in countries where electrical standards are more relaxed and the climate is a bit milder. It's basically a chunky shower head that has a heater built into it. If you do a search for suicide shower on the Internet you'll find various pictures and videos of these things installed badly.
If you do find one of these in your travels then be very aware that there are often badly insulated mains voltage connections in the vicinity of the unit, possibly right next to a metal tap. Some have an earthing/grounding facility, but this may not be attached, or if it is it may not be electrically intact.
If you get too close to the shower head in use you may get an electric shock conducted through the water. This is made a bit more awkward by the fact these units are generally mounted quite low down.
The only safe way to use these is to either ascertain if they have been installed safely or use them to fill a bucket with warm water and then wash yourself down with that. These things are truly worthy of the title deathtrap.
I'm not sure if this particular unit would be usable with an RCD or GFCI since there is a short water-filled path between bare live metalwork and a strategically placed earth wire.
This is another product I'm not providing a link to!
However, you can shower me with electrified dollars at my Patreon page if you wish..
Here's a nice video link to some "ingenious" repairs and bath heating technology.