Its the same technology as the M1. And the M1 advertisement has been nothing about what the sliding weights do and only about the fact that theyre there. Oh and that they dont use metal in their metal woods. Even though they arent the first to do so. So what makes those two drivers so insanely different when it comes to sales? Is it because Jason Day went on a terror at the end of the year and TM used that as part of their marketing?Can't argue that, they've done seemingly nothing to help ME understand why this product would help MY game.