Full Index kit, everything functions perfectly. The original kit includes the headset with built in audio, index controllers with finger tracking, and two Lighthouse v2 sensors. The extras are a set of HTC Vive wand controllers, a pully system for the headset cable (makes the system feel almost wireless), a small front mounted fan to cool the headset and your face, two extra face cushions, a silicone face cushion cover, a washable head strap cover, and cords and chargers for the controllers. I bought a set of non-prescription lens covers and installed them when I got this kit, so the lenses are absolutely pristine.