The SanDisk memory card is designed as a safe and secure and compact data storage device. The card type is micro SDXC. This small format means that it will fit into mobile phones and other smaller electronic devices. Its capacity is 128 GB. The SanDisk microSDXC Ultra 128GB + SD Adapter falls into a speed class of Class 10. The SanDisk memory card is waterproof. More demanding users will also love this device's resistance to magnetism. The packaging also contains a useful adapter for SD slots.