Samsung MB-MPAGA 16 GB microSDHC Flash Memory Card, (Black) Up to 24 MB/s read speed and 21 MB/s write speed Class 10 Speed for the highest performance standard From the world's #1 memory manufacturer since 1992 Water Proof - Can survive in sea water over 24 hours Shock Proof - can withstand being run over by a 1.6 ton vehicle Magnet Proof - Can withstand a 10K magnetic force equal to an MRI Unmatched quality of Samsung genuine memory and a 10 year warranty