Following last week's unboxing of the Xbox One console, Microsoft's Larry Hryb sits down with Zulfi Alam -- general manager of the Xbox accessories group -- to uncover the 40-plus improvements he and his team have made for the Xbox One controller. They include a new screw-free back, redesigned battery compartment, improved D-pad and the addition of haptic feedback to the triggers. The multitude of changes -- down to the usage of smaller screws -- was implemented with the gamer in mind. After 200 prototypes, the team was confident in asserting that the Xbox One controller was the best they've ever made. Check out the video overview below.