Video: Callaway talks Gravity Core
Callaway's SVP of research and development Dr Alan Hocknell talks about the new Gravity Core inside the Big Bertha Alpha driver
Andy Roberts
Unless you've been away from your computer screen, tablet or mobile phone for the past 24 hours, you will realise Callaway has revamped its Big Bertha driver for 2014 with Big Bertha and Big Bertha Alpha drivers.
For the first time ever, Callaway's Gravity Core lets the golfer transform the Callaway Big Bertha Alpha Driver by adjusting spin independently of launch angle for fully optimized ball flights and longer distance.
Callaway's SVP of research and development Dr Alan Hocknell explains more...
First Look: Callaway Big Bertha Alpha and Big Bertha Alpha drivers
Video: Callaway Big Bertha driver