Gigastone SD cards are up to 100MB/s twice as fast as traditional SD cards and are the best U3 speed class for full HD, high-resolution images and videos. Gigastone is a global brand selling products to all over the world. We have branch offices in many countries such as the US, Japan, China, Korea, and Taiwan, so we communicate and support with our customers. Our SD card is always pursuing the best specs to provide customers with high quality and stable performance. Gigastone will help you record and share your precious experiences and memories.