History: The "Bronze Keyboard" PowerBook G3 series was announced in May 1999. It included several improvements to the previous PowerBook G3, including the addition of on-board USB, and the option of an on-board MPEG-2 decoder. The big news, however, was that the "Bronze" was 20% thinner than its predecessor, nearly two pounds lighter, and boasted significantly longer battery life. The "Bronze Keyboard" PowerBook G3 came in two configurations: the 333 MHz was initially sold for $2,499 U.S., and the 400 MHz model was $3,499 U.S. Although Steve Jobs originally announced a May 20 shipping date, few units shipped before mid-June.