What are the differences between the 600 vs i-type film for Polaroid cameras?

The main difference between Polaroid 600 and i-Type film is that the 600 film is compatible with older Polaroid cameras that have a built-in flash, while i-Type film is designed for newer Polaroid cameras that do not have a built-in flash. Additionally, i-Type film is slightly cheaper than 600 film, but both types produce similar quality instant photos.