The Playstation Vita has sold 321, 407 units its first weekend on the Japanese market, according to figures from Enterbrain and reported by Famitsu.com (via Andriasang). The sales figure covers both December 17, the launch day, and December 18. In contrast, the Nintendo 3DS sold 371,326 units over its first two days on the market while first day PSP sales reached 166,074 units all the way back in December 2004.
Omitted from the sales figure was the percentage of stock sold, which would have helped determine the first day shipping figures. Reports suggest, however, that the initial shipping figures could have reached 700,000 units for the launch day. Andriasang believes that the figure will be released when both Media Create and ASCII release their own Vita figures sometime in the week.