Among handheld consoles, the seventh generation began somewhat earlier than the home consoles. November 2004 saw the introduction of the Nintendo DS, and the PlayStation Portable (PSP) came out in December. The DS features a touch screen and built-in microphone, and supports wireless standards. The PSP became the first handheld video game console to use an optical disc format as its primary storage media. Sony also gave the PSP multimedia capability; connectivity with the PlayStation 3, PlayStation 2, other PSPs; as well as Internet connectivity. Despite high sales numbers for both consoles, PSP sales have consistently lagged behind those of the DS.