Features:

• One of the fastest, most rugged and most durable memory cards on the market
• Minimum 20 MBps sequential read and write speed
• Built to work under extreme conditions, including extreme temperatures and high altitudes
• RescuePRO recovers images, documents, mail, video, music and other digital files

Editor Reviews:

Product Description:
SanDisk Extreme III expands its award-winning, professional line of memory cards with a new 4GB SDHC (Secured Digital High Capacity) card. The SanDisk Extreme III 4GB SDHC memory card offers speed, performance and reliability to ensure you get your photos every time. A 4GB memory card can store more than 2000 high-resolution pictures or up to 8 hours of MPEG 4 video.

Rating : - works as promised
my canon XSI dslr has no problems in recording awesome pictures to this card :)