Difference between 32G microsd card SDSQUNC-032G-GN6MA and SDSQUNS-032G-GN3MA

I ordered SDSQUNC-032G-GN6MA (grey/red) but received SDSQUNS-032G-GN3MA (grey/white). The seller told me SDSQUNS-032G-GN3MA (grey/white) is the new version. What are the differences in their specifications?