SanDisk
256GB Ultra microSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-256G-GN6MA
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
Sandisk ultra microSDXC and microSDHC cards are fast for better pictures, app performance, and full HD video.(1) Ideal for android smartphones and tablets, these a1-rated cards load apps faster for a better smartphone experience.(3) Available in capacities up to 400gb, you have the capacity to take more pictures and full HD video and capture life at its fullest. Built to perform in harsh conditions, SanDisk ultra microSD cards are waterproof, temperature proof, shockproof, and x-ray proof.(2) The microSD card is also rated class 10 for full HD video recording performance and a 10-year…
SpecPicks Verdict
SpecPicks classifies SanDisk 256GB Ultra microSDXC UHS-I Memory Card with Adapter… as a category leader on buyer feedback in the external storage category, based on 645,523 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. SanDisk's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.7★ average across customer reviews
- ✓ Large, well-vetted feedback pool (645,523 reviews)
- ✓ Holds up to 24 hours of full HD Video
- ✓ Backed by SanDisk's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Ideal for android-based smartphones and tablets; Operating Temperature -13°F to 185°F (-25°C to 85°C)
- Holds up to 24 hours of full HD Video
- A1-rated for better app performance1
- Compatible with microSDHC and microSDXC supporting host devices
Full Specifications
| UPC | 619659161972 |
|---|---|
| ASIN | B0758NHWS8 |
| Brand | SanDisk |
| Colour | Red and Grey |
| Model Name | Ultra |
| Model name | Ultra |
| Read Speed | 100 Megabytes Per Second |
| Unit Count | 1.0 Count |
| Item Weight | 4.54 Grams |
| Media Speed | 10, 20, 30 |
| Manufacturer | SanDisk |
| Model Number | SDSQUAR-256G-GN6MA |
| Warranty Type | Limited |
| Built-In Media | MicroSD Card, SD Adapter |
Ready to buy?
SanDisk 256GB Ultra microSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-256G-GN6MA is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
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