SanDisk Corporation is introducing a 4GB (Gigabyte) SanDisk Memory Stick PRO Duo Game card that can store up to 64 hours of MP3 music tracks, 20 or more hours of movies/videos/film trailers, 12 hours of game saves, or 4,000 digital still images.

The 4GB card, which is expected to ship this month, carries a suggested retail price of US$219.99. Other capacities in the Memory Stick PRO Duo Gaming Card line include 256 MB (megabytes) at US$34.99, 512MB at US$44.99, 1GB at US$59.99 and 2GB at US$109.99.

The Sony PSP (PlayStation Portable) uses a proprietary storage medium called Universal Media Disc (UMD) for movies and games, but UMD discs are neither recordable nor writable.

SanDisk co-developed the Memory Stick PRO format with Sony. Last year, SanDisk introduced the new gaming line of Memory Stick PRO Duo cards in semi-transparent neon colors. The new 4GB card is red.