Our Editors' Choice remains the SanDisk Extreme 64GB , which offers a great balance of price, reliability, and performance at 62 cents per GB, and will probably satisfy the broadest range of buyers. Like the faster Extreme Pro lineup, the 200GB card is destined to thrill a passionate niche.

Most capacious microSD card ever; Fast enough for 4K video

Expensive per gigabyte; Not fast compared with competition

While expandable storages continue to be the most demanded accessory in history, the need for higher storage space continues to grow at a fast pace. But who would have ever thought that it was possible to cram in over 200GB of data storage in something as small as the SanDisk 200GB Ultra MicroSDXC...

+ Fast transfers; + Fast write speeds; + 200GB massive storage; + Small form factor

- Expensive

It works perfectly in my Galaxy S5.

It works as advertised

-Didn't come with Cars 2 and a can of beans

I think this will be a great card. I always trust SanDisk memory cards and have never had a problem with a memory card. I was a little surprised that I only have 366.8 GB out of 400 GB, and I know some space is for file directories, but it doesnt seem like it can be a true 400 GB.

I'm very impressed with the collaboration that Walmart has with Google Express shopping service. Everything with my order arrived in good condition. The microSD Card is just what I needed to expand the memory on my Microsoft Surface Pro.

I got this for my Nintendo Switch when it was on sale, and it's done great. Its a huge amount of storage and a perfect addition to someone starting out their Switch library. Unfortunately I'm starting to run out of room and I'll have to upgrade soon, but it's held about 40 games with some of them...

Sandisk memory always works well with all my electronics straight out of the package, as did this one.

Bought this for my new phone, very good for the price, nice to have photos on without carrying a camera all the time, so easy to download to the computer.

This card is great. I would buy it again.

I bought this card after reading that benchmarked read and write speeds exceeded those of some of the Sandisk Extreme MicroSDXC cards yet it costs less; 80-100MB/s sequential read and write, Also, I had bought the A1-rated version of the Sandisk Ultra 128GB MicroSDXC card from another company,...

I'm currently using the card in a Samsung Galaxy NX Android-based camera which is effectively a Samsung Galaxy S3 or S4 phone and has similar limitations with regards to SDcard read and write speeds; So while I have been able to realize the 80-100MB/s read and write speeds as other benchmarks have...

I bought this when it came on sale and it seems to be working great so far, use it to transfer movies from my computer to my tablet and haven't had any issues with it yet. Seems to start to slow down a bunch when you try to copy too many things on to it though, so if you're looking for something...