Is this card fast enough for 4K video?

Yes. It carries U3 and V30 ratings, which are the minimum speeds most 4K action cameras and drones ask for. Sustained writes are modest, so very high-bitrate modes may be tight.

How does it compare with a SanDisk Extreme or Samsung Pro card?

Those cards write faster and cost more. This Lexar is fine for casual 4K and everyday storage, but burst shooting and large transfers will be slower.

Does it work in a Nintendo Switch?

Yes. The 128GB capacity and UHS-I interface are compatible with the Switch and Switch OLED, and games load normally.

One 128GB microSDXC card and one SD adapter. The adapter lets you use it in standard SD slots on laptops and cameras.

Will it fit my phone or tablet?

It is a standard microSDXC card, so it fits any device with a microSDXC slot. Check that your device supports cards above 32GB.

Is it covered by a warranty?

Lexar backs the card with a lifetime limited manufacturer warranty.

Lexar High-Performance 633x 128GB microSDXC Memory Card with Adapter, Class 10

Q: Where is the Lexar High-Performance 633x 128GB microSDXC Memory Card with Adapter, Class 10 cheapest?

At Walmart, for $58.43, 17% under what the other stores charge, as of our latest check.

Q: What do buyers say about the Lexar High-Performance 633x 128GB microSDXC Memory Card with Adapter, Class 10?

Rated 4.9 out of 5 from 7 ratings.

Q: Where can I buy the Lexar High-Performance 633x 128GB microSDXC Memory Card with Adapter, Class 10?

3 stores we checked sell it, including Walmart, Staples, Quill.

Best price now

$58.43at WalmartChecked Nov 8

17% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Walmart

What reviewers say

Buyers mostly describe the card as dependable and good value for phones, cameras and consoles. A recurring complaint is that real-world write speeds fall short of the advertised numbers, which matters for burst shooting and large file transfers.

What people mention

Write speedMixedSome owners say real write speeds land below the rated 45MB/s, which shows up in large transfers and burst shooting.
ReliabilityPraisedMost buyers report the card working without errors in phones, cameras and consoles.
4K recordingPraisedUsers say the V30 rating holds up for 4K clips on action cameras and drones.
ValuePraisedBuyers call it a solid capacity for the money compared with premium brands.
DurabilityCriticisedA few owners report the card failing or becoming unreadable after months of use.

About the Lexar High-Performance 633x 128GB microSDXC Memory Card with Adapter, Class 10

Designed for your smartphone, tablet, or action camera, Lexar High-Performance 633x microSDXC UHS-I card lets you quickly capture, playback, and transfer 1080p Full HD, 3D, and 4K video, as well as high-quality movies, photos, and songs. This high-capacity Class 10 card leverages UHS-I technology to deliver high-speed performance -- up to 100MB/s (633x). The card also comes with an SD adapter for easy file transfer. This premium memory solution gives you the speed and space you need to capture more adventure on the go. 128GB microSDXC flash memory card offers an easy and affordable way to store your data Features a Class 10, UHS-1 rating; read speed is 95MB/s, write speed is 45MB/s Dimensions: 0.43"H x 0.59"W x 0.04"D Premium memory solution for smartphones, tablets, and action cameras UHS Speed Class: U3 and V30 video speed that allows you to record 4K video Quickly captures, stores, plays back, and transfers media files, including 1080p Full HD, 3D, and 4K video Includes a Class 10 card and an SD adapter Lifetime manufacturer limited warranty