singer lockstitch sewing machine.

I don’t know how to set this up and use it but I did put batteries in the bottom and turn the switch on the bottom of the foot pedal on then when hitting the switch the needle went up and down and the Bobben went back-and-forth. I would assume if you knew how to set this up it would most likely work. Takes 4 D cell batteries or it looks to be a power plug-in on the back side (see pictures ) but I do not have a plug-in power source for this sewing machine. Thank you for looking and please feel free to ask any questions.