Zectron Pro Memory Card for Samsung NX300 20.3MP NX SMART Digital Camera 32GB Class 10 High Speed SDHC card 32GB Class 10 Ultra High Speed SDHC Memory Card Life time warranty Data is not lost when power is turned off Write Speed: 19MB/s. Read Speed: 20MB's All Cards shipped with FedEX Express Tracking Number for a trouble free serivice 2 working days to most parts of the USA