What kind of breed is my cat?

I have a male cat who is about a year old. I have always questioned his breed. He is mainly white with black patches scattered everywhere. These patches have brown speckles some very large. And others one hair at a time. His fur is very weird, some hairs, and I am describing one single hair. It starts brown, then black, then brown, then black and so on, and scarabs sized green eyes. What breed is he.