SONY MSX-M1GN 1GB High Speed Memory Stick(R) PRO Duo Media (Red) (Retail Package) 1 GB Memory Stick Pro Duo; 940 MB available capacity Supports read/write speeds up to 80 Mbps on high speed-enabled devices Increased operating temperature range Includes MSAC-M2 Memory Stick Duo media adaptor for compatibility in standard Memory Stick media slot Included adaptor allows compatibility with Memory Stick(R) PRO media enabled devices