I have Philips VisionPlus lights, there H1 format, but it differs.
The early euro models have H1 headlight, later models have H7.
It's imprinted in the glass, I think.
You have so many types in Europe;
ZKW and Bosch, with or without the "dots" on the lamp, etc.
You can also take your original one out, and there it would be printed on.
But, anyway, my Philips VisonPlus lights gives me lots of extra sight, and much more white light production