Future Retro Swynx - Manual (Page 13)

CR-78 CLOCK
Time signatures used in the CR-78 will vary, but in general are mostly
4/4 with a few 3/4. Therefore you will need to experiment and see what
time signature settings in the Swynx provide the best results for
controlling the patterns selected and playing in the CR-78.
For best results with the CR-78, use 4/4 and 3/4 time signature settings
in the Swynx. Time signatures 2/4, 8/4, and 6/4 can also provide usable
results.
In general, irregular time signatures 9/8, 7/8, 6/8 and 5/8 will not
generate pleasing results with the CR-78 due to how it handles clocks.
But you’re free to try them out.