Ghetto blaster we called it back in the day, we used to spend a fortune on batteries of a Friday evening before heading off to drink our cheap wine carry-out.
For swivelling (half DE), at a fraction of the price there's the Focus Dynamic. John June sells them so there are videos on the JJ Shaves YouTube channel. He reckoned they're good for head shaving and also it'll be the razor your Mrs borrows, so he managed to convince focus to do a run of pink ones!