It is a very poor MSX computer and is not 100% compliant with the standard : no Centronics port, no Expansion bus, no Audio out, a poor keyboard and a non standard PAL connector. It was pretty expensive and didn't have any success.
As the VG-8000 and 8010, the MC-810 was also built in France (at the Mans by La Radiotechnique)...
BUILT IN LANGUAGE
QWERTY / AZERTY, calculator type keyboard... Cursor keys are very badly arranged
Mode 0 : 40 x 24 Mode 1 : 32 x 24
Mode 2 : 256 x 192 with 16 colors (Hires mode) Mode 3 : 64 x 48 with 16 colors (Multi colour mode) 32 sprites
General Instruments AY-3-8910 Programmable Sound Generator 3 channels, 8 octaves