Polaroid i-Type Retinex Color Round Frame Color Film, Pack of 2

Manufacturer's description:

The most advanced Polaroid film without a battery built into the film cassette. Therefore it is only compatible with the new i-Type cameras (Polaroid Now, Now+, OneStep & Polaroid Lab), but you don't have a battery in every cassette that you have to dispose of. The format corresponds to the iconic square format with the white border.

It is characterized by a short development time of 10-15 minutes and is the cheapest Polaroid film in this image format.