Generally speaking, men's belts are buckled on the left and women's belts are buckled on the right. This is the opposite of buttons on men's and women's shirts. For example, on Hermè s official website, you can notice that women's belts and men's belts face the same direction, but the belts themselves face a left direction and a right direction.
The above information is for reference only. If necessary, please consult Hermè s official website customer service staff.