A Micro SD card with an SD card adapter is a versatile storage solution that can be used in a variety of digital devices, such as music players, smartphones, laptops, cameras, camcorders, GPS systems, and more. These cards come in either Class 6 or Class 10, ensuring high transfer rates and a built-in write protection switch to prevent accidental data loss. Available in 128MB, 256MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB, 64GB and 128GB. 1" W x 0.9" H x 0.05" D