Falams vs Falams II

What's the difference between Falams and Falams II?

The trademark is officially 'FALAMS®' and what is most often referenced.
"Falams II" which is imprinted on the drumhead, denotes the 2nd generation. The original Falams drumhead had a smaller square steel ring/flesh hoop whereas the Falams II has the larger rectangular steel ring/flesh hoop for increased strength/rigidity, and a higher tension threshold.