Sony Sony Hitbit HB-101 MSX

I have the main unit.

type computer
country Japan
year 1984
os MSX Basic V1.0
cpu Zilog Z80A
speed 3.58 MHz
ram 32KB
graphic 256 x 192 (hires), 64 x 48 (multi colour)
colors 16
sound AY-3-810, 3 channels, 8 octaves
ports joystick (2), cardridge (2), tape, RGB video output, centronics