Big Bertha Diablo drivers are outfitted with several core technologies, including both relatively new innovations and technologies that have stood the test of time. The club's Hyperbolic Face Technology, for instance, represents Callaway's commitment to setting a standard in the all-titanium driver market. Three years in the making, Hyperbolic Face Technology redefines the speed at which golf balls leave the clubface by strategically re-shaping the face with a hyperbolic curve. This dramatically improves the impact efficiency and produces a larger effective hitting area, in turn generating higher ball speeds across the entire face. Golfers with Big Bertha Diablo drivers will enjoy significant distance on off-center hits, giving you less disparity between the balls you hit in the center of the clubface.