Knitting machine help?

About 3 years ago, a lady gave me this knitting machine. No instructions with it. She had it given to her.

What do I have, is it something I can use if I can find instructions (where?)?

NO. 4308009256
Model RK-605
B9091 No. 9643 67KE

I am hoping someone knows something about it. I can’t seem to find anything on the web when I swag or google.