SDHC (Secure Digital High Capacity) uses the FAT32 file format and has a maximum capacity of 32GB. Memory cards are divided into four classes based on their minimum write speeds: Class 2 (2MB/s), Class 4 (4MB/s), Class 6 (6MB/s) and Class10 (10MB/s). You can choose the class of memory card that suits your needs. For high-definition devices, use a Class 6 or higher memory card to record dynamic imagery Specifications Capacity 4GB~32GB Data Transfer Rate Class 2/ 4 / 6 / 10 Power Supply 2.7v~3.6v Dimensions 32 x 24 x 2.1 mm (1.26 x 0.95 x 0.08 in) Weight 2g (0.07 oz) Environment Store away from static electricity or magnetic fields. Always verify the data immediately after storage and make regular backups to other storage equipment.Package Include1 X Original PQI 32GB Class 10 SD Card (With retail bag)