Canon Speedlite 430EX III-RT
Plug-on flash, Canon
Question about Canon Speedlite 430EX III-RT
On which radio frequency does the wireless function work? Is it CH-specific?
What exactly do they mean by CH-specific...?
They use the same frequency for every country. It would be too much effort to use a different frequency for each country.
Swiss flashes are compatible with Japanese, German, American. The "Swiss product" is apparently only that it was purchased from a Swiss supplier.