Complex sentence: On September 12,2012, a completely redesigned earbud debuted, advertised as the EarPod; defined by the geometry of the ear, making them more comfortable for people than any other earbud-style headphone.
Split into simpler sentences: On September 12,2012, a completely redesigned earbud debuted, advertised as the "EarPod". It was designed to match the geometry of the ear, making them more comfortable for people than any other earbud-style headphone.