The SanDisk Ultra II 4GB Memory Stick for Sony Cybershot Pro Duo is a reliable and high-quality memory card designed specifically for Sony cameras. With a storage capacity of 4GB, this memory stick is compatible with the Ultra II and Pro Duo formats, providing ample space for storing photos and videos. Made by SanDisk, a trusted brand known for producing durable and efficient memory products, this memory stick ensures smooth and seamless performance when used with Sony Cybershot cameras.