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A small black microSDXC card with SanDisk Ultra branding and capacity label

SanDisk

SanDisk Ultra A1 microSDXC UHS-I Class 10 128GB memory card

SKU CH-TB2D-93A92

A 128GB microSDXC card with Class 10 and A1 ratings, delivering read speeds up to 100MB/s for Full HD video and faster app loading

  • Total capacity128 GB
  • Memory card formatMicroSD
  • Speed classClass 10
  • Max read speedup to 100 MB/s
  • Product typeMicroSDXC

Card type MicroSD

Capacity 128GB

Series Ultra (98MB/s +)

  • Load apps faster with A1-rated performance
  • Capture Full HD video with Class 10 speed rating
  • Transfer files quickly with up to 100 MB/s read speed
  • Store hours of footage with 128 GB capacity
  • Move up to 1200 photos per minute for efficient workflow

SanDisk Ultra A1 128 GB microSDXC

This SanDisk Ultra A1 microSDXC UHS-I card provides 128 GB of storage for Android smartphones and tablets. It carries a Class 10 speed rating and an A1 application performance rating for faster app loading. Read speeds reach up to 100 MB/s for quick file transfers. The card is designed for capturing Full HD video and high-quality photos.

Ideal for Android users expanding phone storage

The card suits anyone who wants more space for apps, photos and Full HD video on a compatible Android device. The A1 rating helps apps launch faster on supported handsets. Buyers who need sustained write speeds for professional 4K video recording should look at a different card. Devices that only support the older microSDHC standard cannot use this microSDXC card.

Class 10 and A1 ratings define the use case

Class 10 guarantees a minimum sequential write speed of 10 MB/s for Full HD video recording. The A1 rating certifies random read and write performance for running applications directly from the card. These two specifications together determine whether the card matches your workload.

How it compares

Measured against everything we stock in SD & MicroSD Memory Cards, at today’s prices. Recalculated every night.

Price $27.99
Cheaper than about 68% of the 1,947 comparable items (median $46.99).
Total capacity 128 GB
Higher than about 60% of the 1,132 comparable items (median 64 GB).
Price per TB $218.67 per TB
Cheaper than about 77% of the 901 comparable items (median $374.69 per TB).

Specifications

Product
Brand nameSanDisk
Product lineUltra
Model nameSDSQUAR-128G
Total capacity128 GB
Product typeMicroSDXC
Performance
Speed classClass 10
Max read speedup to 100 MB/s
Storage
Memory card formatMicroSD

Other versions of this model

5 more in the same range

Questions about this item

Does the SanDisk Ultra 128 GB microSDXC card generate noticeable heat or draw extra power when recording Full HD video all day?

Memory cards have no moving parts and draw very little power, so heat and battery impact are negligible during continuous Full HD recording.

What device slot or adapter do I need to use this 128 GB microSDXC card?

You need a microSDXC-compatible slot — most Android phones, tablets, action cameras and drones accept it directly, otherwise a microSD-to-SD adapter fits standard SD readers.

Will this Class 10, A1-rated card work reliably in an older camera that only supports microSDHC?

No — microSDXC cards require an SDXC-capable host; an older microSDHC-only device will not recognise the 128 GB capacity.

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