The PlayStation Vita has sold 321,407 units in its first week at Japanese retail, reports Famitsu. The "first week" may be a little misleading, given the handheld's launch date and Enterbrain's reporting deadline, as it only covers two days: December 17 and 18.

Andriasang pulled the "first week" sales for the 3DS and PSP as well, which sold 371,326 units (covering 2/26/2011 and 2/27/2011) and 166,074 units (covering just 12/12/2004), respectively.

The Vita begins its international wanderlust on February 22, 2012.

This article was originally published on Joystiq.