Ernest Sports ES14 Training Tool, White Ernest Sports revolutionizes the game with a great new tool for teaching professionals, club fitters and serious golfers The Es14 delivers critical data instantly, easily and affordably. Battery- 9V Power Source. Compatibility- Apple and Android The unit offers a wide range of statistical information including club speed, launch angle, ball speed, Smash factor, spin rate &amp; distance Ernest Sports revolutionizes the game with a great new tool for teaching professionals, club fitters and serious golfers The ES14 delivers critical data instantly - easily and affordably The ES14 provides you with vital information to improve any golfer's game; club speed, launch angle, ball speed, smash factor, spin rate and distance