Is this card fast enough for 4K video?

Yes. The V30 and U3 ratings guarantee a 30MB/s minimum sustained write, which meets the requirement of most 4K action cameras, drones and phones.

How does it compare with the Extreme Pro?

The Extreme Pro has a higher write rating and is better for burst photography and high-bitrate recording. This card is slower but meets the V30 bar for most 4K shooting.

Will it work in a Nintendo Switch?

Yes. The A2 rating helps game load times, and 128GB holds a large game library. Format it in the console before use.

One 128GB microSDXC card and one full-size SD adapter.

Does it work with UHS-II devices?

It works, but at UHS-I speeds. A UHS-II device will not reach its full speed with this card.

SanDisk rates the card for water, temperature, shock and X-ray resistance, so it survives typical outdoor use.

SanDisk 128GB Extreme microSDXC UHS-I Flash Memory Card with Adapter

Best price now

$30.07at WalmartChecked Nov 13

Prices are checked against each store and labelled with when.

Visit Walmart

SanDisk 128GB Extreme microSDXC UHS-I Flash Memory Card with Adapter

Best price now

$30.07at WalmartChecked Nov 13

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $30.07 at Walmart on Nov 13.

Our take on the SanDisk 128GB Extreme microSDXC UHS-I Flash Memory Card with Adapter

The SanDisk Extreme 128GB microSDXC is a UHS-I card aimed at action cameras, drones and phones that record 4K video. SanDisk rates it at 160MB/s read and 90MB/s write, with U3, V30 and A2 ratings, so it is built for sustained 4K capture and fast app loading. It ships with a full-size SD adapter for card readers and laptops. Against the Extreme Pro line it gives up some write speed, but it costs less and still meets the V30 bar most 4K shooters need. Buyers rate it well overall, though a minority report early failures.

Best forAction camera and drone owners recording 4KPhone and tablet users who need more storagePhotographers who want a spare card with an SD adapter

Pros

160MB/s read and 90MB/s write ratings suit 4K video
V30 and U3 ratings meet the speed class most 4K cameras require
A2 rating speeds up app loading on Android devices
Includes a full-size SD adapter for readers and laptops
128GB holds hours of 4K footage or a large photo library

Cons

UHS-I interface caps speed below UHS-II cards
Write speed trails the Extreme Pro line
Some buyers report cards failing within months
Sustained write speed drops once the card's cache fills

SanDisk 128GB Extreme microSDXC UHS-I Flash Memory Card with Adapter prices at every store

WalmartNew
In stockSold by First Choice OnlineReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$30.07+ $5.99 shippingChecked Nov 13
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What reviewers say

4.1 / 5292 ratings

Owners rate the card 4.1 out of 5 and mostly praise its speed in action cameras, drones and phones. A minority report cards that failed or slowed down after a few months of use.

What people mention

SpeedPraisedOwners say it keeps up with 4K recording in action cameras and drones.
ReliabilityMixedMany cards run for years, but some buyers report failures within months.
Sustained writeCriticisedWrite speed falls during long bursts once the card's cache fills.
AdapterPraisedThe included full-size SD adapter is useful for laptops and card readers.
CapacityPraised128GB holds hours of 4K footage or a large photo library.

About the SanDisk 128GB Extreme microSDXC UHS-I Flash Memory Card with Adapter

This is a 128GB SanDisk Extreme microSDXC UHS-I memory card.

The card is rated for read speeds up to 160MB/s and write speeds up to 90MB/s. It carries Class 10, UHS Speed Class 3 (U3), Video Speed Class 30 (V30) and Application Performance Class 2 (A2) ratings.

Brand: SanDisk
Model: SDSQXA1-128G-GN6MA
Series: Extreme
Capacity: 128GB
Card type: microSDXC UHS-I
Read speed: Up to 160MB/s
Write speed: Up to 90MB/s
Speed ratings: Class 10, U3, V30, A2

Specifications

size: 128GBSource
color: MulticolorSource

Questions and answers

Is this card fast enough for 4K video?: Yes. The V30 and U3 ratings guarantee a 30MB/s minimum sustained write, which meets the requirement of most 4K action cameras, drones and phones.
How does it compare with the Extreme Pro?: The Extreme Pro has a higher write rating and is better for burst photography and high-bitrate recording. This card is slower but meets the V30 bar for most 4K shooting.
Will it work in a Nintendo Switch?: Yes. The A2 rating helps game load times, and 128GB holds a large game library. Format it in the console before use.
What is in the box?: One 128GB microSDXC card and one full-size SD adapter.
Does it work with UHS-II devices?: It works, but at UHS-I speeds. A UHS-II device will not reach its full speed with this card.
Is it waterproof?: SanDisk rates the card for water, temperature, shock and X-ray resistance, so it survives typical outdoor use.
Where is the SanDisk 128GB Extreme microSDXC UHS-I Flash Memory Card with Adapter cheapest?: At Walmart, for $30.07, as of our latest check.
What do buyers say about the SanDisk 128GB Extreme microSDXC UHS-I Flash Memory Card with Adapter?: Rated 4.1 out of 5 from 292 ratings.