SanDisk Ultra 64GB microSDXC UHS-1 Card, SPEED UP T0 100MB/s
SanDisk Ultra 64GB microSDXC UHS-1 Card, SPEED UP T0 100MB/s
The SanDisk Ultra 64GB microSDXC card is a high-speed memory solution for smartphones, tablets, and cameras. It offers a generous 64GB of storage capacity for your photos and Full HD videos.
Featuring the UHS-I speed class and Class 10 rating, it guarantees a minimum sustained write speed for seamless Full HD video recording. The card boasts read speeds of up to 100MB/s (or higher in some newer versions) for quick file transfers.5 It also includes the A1 rating for faster app loading and performance on Android devices.

The SanDisk Ultra 64GB microSDXC UHS-I Card with a "SPEED UP T0 100MB/s" (which means Up to 100MB/s) designation is an entry-level to mid-range memory card suitable for general use in smartphones, tablets, and Full HD video recording.
Here are the key specifications and ratings for this memory card:
Key Specifications
| Specification | Value | Notes |
| Capacity | 64GB | Uses the microSDXC format. |
| Bus Interface | UHS-I | Ultra High Speed Phase I bus. |
| Max Read Speed | Up to 100 MB/s | This is the maximum read speed (data transfer from the card), which is typically faster than the write speed. Newer versions of the Ultra series may be rated up to 120 MB/s or 140 MB/s. |
| Minimum Write Speed | 10 MB/s Guaranteed | The actual maximum write speed is generally lower than the read speed but is guaranteed to meet the minimum required for the speed class. Some retailers suggest the write speed may be around 10MB/s to 60MB/s, but the Class 10/U1 rating only guarantees the 10 MB/s minimum. |


