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Two small black microSDXC cards with red labels side by side

SanDisk

SanDisk Ultra 128GB microSDXC Class 10 2-pack

SKU CH-864S-71V7X

Two 128 GB Class 10 microSDXC cards for phones, cameras and other portable devices

  • TypemicroSDXC
  • Card typeMicroSD
  • Capacity128GB
  • Speed Class RatingClass 10
  • Two cards give 128 GB each for phones and cameras
  • Class 10 rating guarantees minimum 10 MB/s write speed
  • microSDXC format fits devices that support 64 GB to 512 GB cards
  • Compact size works with adapters for standard SD slots
  • Twin pack lets you keep a spare or split storage

Twin 128 GB microSDXC cards

This pack supplies two Class 10 microSDXC cards, each holding 128 GB. They are aimed at anyone who needs extra removable storage for phones, action cameras, drones or handheld consoles. The Class 10 rating guarantees a minimum sequential write speed of 10 MB/s.

Good for single-slot devices.

The cards suit users who swap media between gadgets or want a spare in the bag. They will not satisfy creators who record high-bitrate 4K video or burst RAW photos, because the sustained write ceiling is limited to the Class 10 floor.

Drops straight into any microSDXC slot

No adapter is required for native microSDXC hosts; a standard SD adapter lets them fit full-size slots. The pair frees you from juggling a single card across multiple devices and leaves the device’s internal storage untouched.

Highlights

  • Two cards give 128 GB each for phones and cameras
  • Class 10 rating guarantees minimum 10 MB/s write speed
  • microSDXC format fits devices that support 64 GB to 512 GB cards
  • Compact size works with adapters for standard SD slots
  • Twin pack lets you keep a spare or split storage

Specifications

BrandSanDisk
TypemicroSDXC
Card typeMicroSD
Capacity128GB
Speed Class RatingClass 10

Questions about this item

Does my device need a microSDXC slot to use these 128 GB cards?

Yes, the cards follow the microSDXC format, so the host must explicitly support microSDXC capacities from 64 GB to 512 GB; older microSD or microSDHC-only slots will not recognise them.

Will these Class 10 cards work in a camera that only specifies Class 4?

They are backwards-compatible; the camera will write at its own Class 4 minimum speed while the cards simply provide their higher 10 MB/s capability.

How can I confirm each card delivers Class 10 performance after formatting?

Run a sequential write test with a tool such as CrystalDiskMark or the SD Association formatter benchmark; sustained write speed should stay at or above 10 MB/s.

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