Is this card good for 4K video?

Yes. It is U3 and V30 rated, which covers the sustained write speed 4K UHD recording needs in action cameras, drones and phones.

What does the A2 rating mean?

A2 means the card is rated for at least 4000 random read IOPS and 2000 random write IOPS, which speeds up app loading and in-app performance on supported Android devices.

Will it reach 190MB/s in my device?

Only with a UHS-I compatible host and a suitable reader. Older or slower devices will cap the transfer speed below the card's rating.

Does it come with an adapter?

Yes. A full-size SD adapter is included, so the card fits SD slots in laptops and cameras.

Is it waterproof and shockproof?

SanDisk rates it temperature-, water-, shock- and X-ray-proof, so it holds up to harsh conditions better than standard cards.

Is it compatible with the Nintendo Switch?

Yes. The Switch uses microSDXC cards, and this one works for game storage, though the console does not use the A2 app-performance rating.

SanDisk Extreme A2 128GB Micro SDXC Flash memory Card with Adapter

Best price now

$36.89at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

SanDisk Extreme A2 128GB Micro SDXC Flash memory Card with Adapter

Best price now

$36.89at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $36.89 at Walmart on Nov 8.

Our take on the SanDisk Extreme A2 128GB Micro SDXC Flash memory Card with Adapter

The SanDisk Extreme A2 is a 128GB microSDXC card built for 4K UHD recording and fast app loading. It carries UHS Speed Class 3 and Video Speed Class 30 ratings, so it meets the sustained write requirement for 4K video on action cameras, drones and Android phones. Its A2 rating (4000 read IOPS, 2000 write IOPS) targets app performance on phones and tablets. Against plain U1 cards it is the safer pick for high-bitrate video; against SanDisk's own Extreme Pro it gives up some peak speed but covers the same 4K and A2 use cases. It ships with an SD adapter and is rated temperature-, water-, shock- and X-ray-proof.

Best forAction camera and drone owners recording 4KAndroid phone and tablet storage expansionNintendo Switch and handheld gaming storagePhotographers who need a full-size SD adapter

Pros

U3 and V30 rated for sustained 4K UHD recording
A2 rating speeds up app loading on phones and tablets
Reads up to 190MB/s and writes up to 90MB/s
Rated water-, shock-, temperature- and X-ray-proof
Includes a full-size SD adapter for laptops and cameras

Cons

Needs a UHS-I compatible host to reach its rated speeds
Not the fastest card in SanDisk's lineup for burst shooting
A2 app benefits only apply on devices that support the standard

SanDisk Extreme A2 128GB Micro SDXC 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.
$36.89+ $10.99 shippingChecked Nov 8
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What reviewers say

4.8 / 562 ratings

Owners rate it highly, with 4.8 out of 5 from 62 ratings. Buyers mainly praise reliable 4K recording and fast transfers, and treat it as a dependable card for cameras, drones and phones.

What people mention

ReliabilityPraisedOwners report steady 4K recording and no corruption in cameras, drones and phones.
SpeedPraisedBuyers note quick transfers and app loading, though full speed needs a UHS-I compatible device.
CompatibilityMixedIt works across many devices, but some users see lower speeds than rated on older hardware.
BuildPraisedThe card and adapter feel durable, and the water, shock and X-ray ratings add confidence.
ValueMixedSome buyers think it costs more than basic cards, while others accept it for the 4K and A2 ratings.

About the SanDisk Extreme A2 128GB Micro SDXC Flash memory Card with Adapter

This SanDisk Extreme is a 128GB microSDXC UHS-I memory card that comes with an adapter.

Capacity: 128GB
Form factor: microSDXC card
Write speed: Up to 90MB/s
Compatibility: SDXC and SDXC UHS-I enabled host devices
Weight: 5 g
In the box: microSDXC card, SD adapter

Specifications

color: MulticolorSource
Capacity: 128GBSource
Sequential Read Performance: Up to 190MB/sSource
Sequential Write Performance: Up to 90MB/sSource

Questions and answers

Is this card good for 4K video?: Yes. It is U3 and V30 rated, which covers the sustained write speed 4K UHD recording needs in action cameras, drones and phones.
What does the A2 rating mean?: A2 means the card is rated for at least 4000 random read IOPS and 2000 random write IOPS, which speeds up app loading and in-app performance on supported Android devices.
Will it reach 190MB/s in my device?: Only with a UHS-I compatible host and a suitable reader. Older or slower devices will cap the transfer speed below the card's rating.
Does it come with an adapter?: Yes. A full-size SD adapter is included, so the card fits SD slots in laptops and cameras.
Is it waterproof and shockproof?: SanDisk rates it temperature-, water-, shock- and X-ray-proof, so it holds up to harsh conditions better than standard cards.
Is it compatible with the Nintendo Switch?: Yes. The Switch uses microSDXC cards, and this one works for game storage, though the console does not use the A2 app-performance rating.
Where is the SanDisk Extreme A2 128GB Micro SDXC Flash memory Card with Adapter cheapest?: At Walmart, for $36.89, as of our latest check.
What do buyers say about the SanDisk Extreme A2 128GB Micro SDXC Flash memory Card with Adapter?: Rated 4.8 out of 5 from 62 ratings.