The SDSDB-004G from WD/SanDisk Retail is a 4GB SDHC flash memory card that blends SanDisk's trademark quality with the reliability users have come to expect from a Western Digital company. Focused on delivering both performance and value, this Secure Digital card is rated as Class 4, ensuring a minimum write speed of 4MB/s. This makes it suitable for storing photos, music, video clips, and documents. It's a perfect companion for entry-level to mid-range digital cameras and camcorders, as well as other SDHC-enabled devices. The SDSDB-004G is engineered to withstand the toughest conditions, making it shockproof, waterproof, and X-ray proof. This robust construction, coupled with SanDisk's reputation for durability, ensures that your data is safe in a variety of environments.