Callaway Big Bertha V-Series Driver There are many ways to find distance. One of them is speed, and speed (and lots of it) is exactly what Callaway brings in the Big Bertha V-Series Driver. Its the newest member of the Big Bertha Family, built for distance from lightweight materials, better aerodynamics and refined components, with a high MOI and OptiFit adjustability. Its here to give you more speed than youve ever had. Speed Optimized Technology: A lightweight design at less than 290-grams. A lighter club helps create more clubhead speed, which helps create more ball speed, which helps you hit the ball a long way Aerodynamic shaping lowers drag through the entire swing to give you faster swing speeds Forged composite material in the crown thats lighter, leading to maximum clubhead speed for higher ball speed Hyper Speed Face: Theres that word in.speed in. again. This proven face technology delivers higher ball speeds across the face so you consistently hammer long drives Lighter, hotter, and more robust to help produce those increased ball speeds OptiFit Technology: An adjustable hosel that lets you choose from a combination of eight different loft (-1, S, +1, +2) and lie angles (Draw or Neutral) to find your optimized trajectory and shot shape Lightweight Premium Shaft: One more way that Callaway gives you more speed in the Big Bertha V-Series - an ultra-lightweight Mitsubishi Shaft Bassara 42-grams in 10-degree and 13.5-degree HT; Speeder 565 in 9-degree