Sandisk

SanDisk 256GB Extreme microSD UHS I Card for 4K Video on Smartphones, Action Cams & Drones 190MB/s Read, 130MB/s Write SDSQXAV 256G GN6MN, Red/Gold

Name: SanDisk 256GB Extreme microSD UHS I Card for 4K Video on Smartphones, Action Cams & Drones 190MB/s Read, 130MB/s Write SDSQXAV 256G GN6MN, Red/Gold
Brand: Sandisk
SKU: B0B2DCZDJZ
Price: 61.69 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$61.69

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View Current Price on Amazon → Compare to similar external storage

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.

Bottom line: The SanDisk 256GB Extreme microSD UHS I Card for 4K Video on Smartphones, Action Cams & Drones 190MB/s Read, 130MB/s Write SDSQXAV 256G GN6MN, Red/Gold is a niche pick — read recent reviews before buying in the external storage category, priced around $61.69. Compare close alternatives before committing.

Save up to 256GB of 4K footage on a card built for action cams, drones, and Android phones. The SanDisk Extreme microSDXC UHS-I card pushes read speeds up to 190MB/s with SanDisk QuickFlow Technology, so offloading a weekend's worth of clips stops eating your evening. Write speeds reach 130MB/s, fast enough to capture burst photos and 4K UHD video without dropped frames, and the U3 and V30 speed class ratings guarantee the sustained write floor that 4K recording modes require. The A2 application performance rating matters if you run apps directly from the card on an Android phone, where…

SpecPicks Verdict

SpecPicks scored SanDisk 256GB Extreme microSD UHS I Card for 4K Video on… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the external storage category. Sandisk's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

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

✓ 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

With SanDisk QuickFlow Technology10 (64GB - 1TB), this card optimizes performance for timesaving media offloads with quick read speeds up to 190MB/s.9 Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately).
Capture fast-action photos or shoot 4K UHD video2 with write speeds of up to 130MB/s.9The SanDisk Extreme microSDXC UHS-I Card lets you shoot more and faster.
Ideal for recording outdoor adventures, weekend trips, or sporting events without skipping frames. With up to 1TB1, the SanDisk Extreme microSD UHS-I card lets you capture uninterrupted 4K UHD and Full HD video with its UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings.5
Get faster app performance for an outstanding smartphone experience thanks to the SanDisk Extreme microSD card’s A27Specification.
SanDisk Extreme microSDHC and microSDXC UHS-I Cards are shockproof, temperature-proof, waterproof, and X-ray-proof,4 so you can enjoy your adventures without worrying about the durability of your memory card.

Full Specifications

Brand	Sandisk
Color	Red/Gold
Weight	256g
Model Name	Extreme
Read Speed	190 megabytes_per_second
Unit Count	1 Count
Media Speed	130 MB per second
Model Number	SDSQXAV-256G-GN6MN
Warranty Type	Limited
Mfr Part Number	SDSQXAV-256G-GN6MN
Flash Memory Type	Micro SD
Compatible Devices	Smartphone
Additional Features	Water Proof
Hardware Connectivity	microSDXC
Item Dimensions L x W	0.04"L x 0.59"W
Memory Storage Capacity	256 GB
Flash Memory Video Speed Class	V30
Secure Digital Association Speed Class	Class 10

Ready to buy?

SanDisk 256GB Extreme microSD UHS I Card for 4K Video on Smartphones, Action Cams & Drones 190MB/s Read, 130MB/s Write SDSQXAV 256G GN6MN, Red/Gold 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.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-08-17. Price and availability subject to change.