Short answers, pulled from the story.
Sony Computer Entertainment first announced development of the PlayStation Portable at a press conference preceding E3 2003. CEO Ken Kutaragi called the device the Walkman of the 21st century, referencing its multimedia capabilities.
The PSP base model launched in Japan on the 11th of December 2004 for ¥19,800 while the Value System launched for ¥24,800. Sony released the PSP in North America on the 24th of March 2005 with an MSRP of US$249/CA$299.
The system sold over 80 million units during its ten-year lifetime before fading into history. From 2006 to the third quarter of 2010, the PSP sold 53 million units globally.
The original PlayStation Portable measures approximately 170 millimeters long and weighs 280 grams. The PSP-2000 appeared in Hong Kong on the 30th of August 2007 and the PSP Go was released on the 1st of October 2009.
Hardware shipments of the PSP ended worldwide in 2014. Production of Universal Media Discs ended when the last Japanese factory producing them closed in late 2016.