via this auction
Note the seller made a video for another one posted here.

6 voice analog polysynth from italy and the mid 80s.
The Crumar BIT99 was serviced:
- power supply electrolytic capacitors replaced
- firmware upgraded with Tauntek one: you can now easily control and program the synth with any midi controller using Control Change messages
- meticulously calibrated
- panel board and case fully dismantled, cleaned and polished
- loaded with factory set VOL 1 (Vol 2 sysex can be provided too)
It sounds, plays and looks awesome. It does has some light wear and scuffs but all in all it is in excellent condition.
I warranty the instrument at least for a year. Should there be a problem no need to ship the whole instrument back but only the board(s) needing repair. These synths are actually extremelly well built, by far the best italian synth i've seen (maybe safe for the Elka Synthex I never had a chance to lay my hands on). Quality and thickness of the metal and PCB are of japanese standards. Far better quality for instance than Moog from the 80s (Prodigy, Opus 3 etc) and by no comparison to the other (great sounding) italian Siel Opera 6."