Callaway has brought back the Big Bertha Driver in a big way for 2014. The new Callaway Big Bertha Alpha Driver features a unique Gravity Core technology. With gravity Core a player can adjust spin rate without changing launch angle, which allows of a fully optimized ball flight and longer distance. Combined with an adjustable hosel and adjustable weights, Callaway is releasing their most advanced and customizable driver ever. The Callaway Big Bertha Alpha Driver will come stock with a Mitsubishi Zeta Tour graphite shaft. Click here to learn more.