Speed classes state the minimum sustained write speed the card keeps to under the standard: U3 means at least 30 MB/s and video class V10 at least 10 MB/s. The 190 MB/s read figure is a peak value, and your card reader has to support it as well. The manufacturer does not publish a maximum write speed for this model.
The card suits you if your camera, camcorder or laptop takes full-size SD cards and supports the SDXC standard. 256 GB is a comfortable size for people who shoot a lot and do not want to empty the card after every trip. Protection against water, shocks and magnets helps when shooting outdoors.
| Brand | SANDISK |
|---|---|
| Product colour | Black |
| Warranty | 10 years |
| Internal memory type | UHS-I |
|---|
| Capacity | 256 |
|---|
| Flash card type | SDXC |
|---|
| Wi-Fi | No |
|---|
| Read speed | 190 |
|---|---|
| UHS Speed Class | Class 3 (U3) |
| Video Speed Class | V10 |
| Protection features | Drop proof/Magnet proof/Moisture resistant/Shockproof/Temperature proof/Waterproof/Wear resistant/X-ray proof |
|---|
| Width | 23.88 mm |
|---|---|
| Depth | 2.03 mm |
| Height | 31.75 mm |
| Weight | 1.67 g |
For 4K, U3 and V30 cards are generally recommended. This card is U3 but its video class is V10, so check your camera manual for the class it needs in 4K mode.
The manufacturer does not specify a maximum write speed. Under the standard, U3 means sustained writing of at least 30 MB/s.
An SDXC card is read by devices that support the SDXC standard. An older device made only for SD or SDHC cards may not recognise it. A UHS-I card also works in a slot without UHS support, only more slowly.
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