Transcend (TS2GSD150) 150x (2 GB) SD Card - Ultra Performance 150X Secure Digital cards with data transfer speed up to 22.5MB/sec. It will be the best choice for your digital cameras and other handheld device. Different from other manufacture, Transcend insists on using only original SLC (Single-Level-Cell) NAND Flash chips that have a higher write speed, lower power consumption, and superior durability compared with Secure Digital cards made with MLC (Multi-Level-Cell) chips.