Digital Echo/Reverb and Chorus effect box. And although released under the name of Continental, I believe it's Polish, and manufactured by UNITRA, because the guts have the logo of this company. Nothing special. Sounds like gigs from the '70s.
 

Digital Echo/Reverb and Chorus efekt produkowany pod szyldem Continental, ale przez zakłady UNITRA [bebechy oznaczone logo tej firmy]. Nic specjalnego. Brzmi jak chałtura w stodole w latach 70tych.