This watchface is based on polish heraldic symbol - checkerboard. It's present on Polish air vessels: https://pjsx.pl/checkerboard.html

This is mimialistic watchface with hours/minutes/seconds hands based on default tic toc but generated from React/CSS description from https://pjsx.pl/tictoc.html.

This is classic pinpup watchface in bulgarian red, using digitalised Gil Elvgren's pinup drawing called 'Drawing Attention'. 

Font used is Cookie by Polish designed Ania Kruk chosen because of the style that fits both into piup drawing as well as round look of Pebble Time Round.