Mixt Book Player Copera © 1993 Yamaha
The Copera was a special brand of the Sega Pico console developed by Yamaha under license from Sega. It adds stereo sound output, an FM sound chip, support for microphones and music composition and two MIDI ports.
It runs all Pico software, and also has its own software called Mixt Books.
Model MMG-1
Released in December 1993 in Japan.