It's shaped differently from my beloved Shiseido.
It also hugs my fingers for precise control. Other curlers have wider finger holds, which allow for slipping. This fits my hand like a glove. (Which I would really only need if I were some kind of Edward Scissorhands for lash curls, but it's still easier to use without slipping.)
This curler is also a really pretty rose gold tone and stands out on a vanity. Pick it up for $20.00 anywhere Tweezerman is sold.