Corsair's Secure Digital cards are extremely small yet remarkably fast and reliable. Rated at 60X and 40X speeds, these cards support impressive 7MB and 5MB per second sustained write speeds, respectively. Corsair has incorporated the latest power saving technology to maximize battery life. Whether you need more storage for digital pictures, MP3s, your cellular phone or PDA, Corsair's Secure Digital cards will deliver a lifetime of satisfaction.