Too bad it's only 4 color...
I have one of the original Epson PictureMate 4x6 printers with 6 inks. Awesome results and made thousands of photos, mostly portraits of strangers I met on the street.
Bought one of the newer Epson Charm PictureMate 4x6 printers for a backup. Problem is it it just 4 colors. The print quality was noticeably worse. Ended up not using it.
Expect the above PM-400 will be similarly disappointing as well.