Mystery Vivitar crt??

Ive been looking for a little crt display for my desk and i thrifted this and could not find any info when i googled the model number! Due to the vivitar branding and camera inputs im assuming its some sort of early video monitor? Or If anyone knows what the controls on the front do!! Didnt come w a power source so i cant test it just yet, wanted to see the manual so i could make sure i pick up the best power supply