Olivetti video terminal WS685 (1988)

The WS 685 is an interactive video terminal capable of operating in asynchronous mode (TTY-like), intended for connection to central processors. It operates in complete emulation with the DEC W 220-7 b,t, DEC VT 220-8 bit, DEC VT 100, and DEC W 52 models.
The terminal consists of an electronic box, video display, and keyboard.

Not a so common device, never saw one in my life.

But I have found this leaflet showing this. Maybe it's of interest for someone.