In the context of the input sentence, determine the relationship between 'Apple Inc' and 'iPhone 6S'.
Options: product/material produced, stock exchange, employer, business division

SAN FRANCISCO, Sept 9 (Reuters) - Apple Inc unveiled the iPhone 6S and 6S plus on Wednesday, the latest iteration of its lucrative smartphone that offers 3D touch, a display technology that responds differently depending on how hard users press their screens.
product/material produced