Samsung Memory 64GB PRO microSDXC UHS-I Grade 1 Class 10 Memory Card Memory Card (up to 90MB / s transfer speed) without an adapter (accessory)
I was only quite skeptical about the speed information. But the memory card is actually holding the 90MB / s, a good. However difficult is still the writing speed, which is at this card, however, about the reading speed of most other cards on the mar