Brother KH390 is a dual-gauge knitting machine.
It features a plastic bed with a pretty pastel-green/white color combination. The bulky option of the machine features 110 needles.
The switchable panels are nicely stored inside the styrofoam box.
The machine should come with all standard assesories. But if not, they are easy to find (for example, check out my shop) because any assesories for bulky and/or standard machines will work.
There are still many of them circulating on the used market, but mostly in Japan.
I really hope that you are a lucky owner of one because this machine allows so much versatility with yarn despite being capable of only manual manipulations of stitches.