The SanDisk memory card is a secure and compact device for the storage of your data. The memory card type is micro SDXC. This small format means it'll fit into mobile phones and other smaller electronics. Its capacity is 256 GB. The SanDisk microSDXC Ultra 256GB + SD Adapter fits into the speed class of Class 10. The SanDisk memory card also has waterproofing, and it will work at high temperatures. The packaging contains a very handy SD adaptor.