The SanDisk 128GB micro SD SDXC Card is a high-capacity memory card designed for universal compatibility. With a speed class of Class 10 and UHS-1 technology, this card offers fast data transfer speeds of up to 100MB/s. The bundled memory card adapter makes it easy to use in various devices, and the SanDisk Ultra A1 series ensures reliable performance. With 128GB of storage capacity, this card is perfect for storing a large amount of data and media files on your mobile devices.