SanDisk 400GB Ultra MicroSDXC UHS-I Memory Card with Adapter - 100MB/s, C10, U1, Full HD, A1, Micro SD Card - SDSQUAR-400G-GN6MA

This card has not disappointed me yet. With huge amounts of space, and a transfer read speed listed at 100MB/s, it's a card that can serve all kinds of purposes—assuming your device supports this storage amount—for photos, music, videos, and just plain old file storage. I am using mine with the new Sony NW-A45/L Walkman with Hi-Res Audio, Moonlit Blue (2018 Model) , and it has worked marvelously so far, with all the memory being "seen" by the player, and some very good transfer speeds. I have not yet specifically tested the actual speed, but will do so soon with the Black Magic speed tester, and will update this review with that report. Right now (mid-2018) this card is running at just under $200. I don't suspect it will drop anytime soon, since its the only guy on the block, so if you have a use for it, you might as well get it now. I doubt this will even be marked down much towards the end of the year, although I could be wrong, due to its unique status. Having said that, if the price is still too high, keep an eye on it, because there MAY be occasional rebates, two-day sales, etc. It has all the standard SanDisk hallmarks: high quality, nice look, good performance, nice looks, and it, of course, comes with an adapter in case you wish to use this in a camera that takes the standard sized SDXC cards. I can put almost my entire lossless audio library on this one card, which is amazing. Five stars, and an update soon with the results of the speed test I plan to perform.

Works well

Bought this for my Paralenz underwater camera that shoots up to 4K 30fps. My camera manufacturer says 128gb V30 is the required max but this card is rated for a min of 10mb/sec & and the write speed is undocumented publicly after contacting Sandisk, with transfer speeds to 100mb/sec. Maybe they won't release write speeds because it performs so well they don't want it competing with their faster rated cards?.... just speculation of course! But this card performs flawless... not only in my Galaxy Note 4 phone but also in my camera. Leave it formatted in the default exFat and your good! After much research it appears its only weakness may be in burst abilities for use as internal memory but sustained transfer rates are great!... so much so that 4k @ 30fps video was no problem in testing. I'm also astonished this card works so well in my Note 4, I had a 128gb Sandisk in before and this definitely feels faster. At this point I have the highest recommendations for this card.... you can now store mass amounts of 4K footage.... according to my tests so far, about 10+ Hrs of 4K @ 30 fps! I've found other brands often give similar speeds as compared to Sandisk but fail miserably long term in reliability.... Do you really want 400 GB worth of stuff lost because you wanted to save a few bucks with another brand? Sandisk is the most reliable IMO and it's amazing they remain at the front of the pack. It's not the fastest dog out of the gate that wins, but the one who can make it to the finish line first! I own 3 of these now. I can film 2.7k @ 60fps and put 17 one hour dives in a week long dive vacation and I only use about 180gig! Its great not having to tote a big laptop on my trips! I have one just for backup too on my trips .. Haven't had to use it yet!

I love it! Works great in my Galaxy Note 8! Fast enough that I can throw pretty much anything at it. If you're wondering, modern Android versions (starting with Lollipop, as I recall) have the ability to read up to 1 TB of external storage. While this 400GB card is the maximum capacity you can currently buy*, the leading manufacturers are feverishly working to make larger capacity cards. For now, though, I think 400GB is enough to handle all the 4K video I can shoot. *- Don't be fooled by unscrupulous sellers, particularly on auction sites ( I won't name it because there are a lot of fake cards here, too), who list ridiculously large capacity cards for astonishingly low prices... you don't get what you pay for! They take cheap, generic cards, usually no more than 4 or 8 GB, and rewrite the card's firmware & re-label it to make it act and appear like a larger card... 256GB, 500GB or higher! There are tons of listings out there for 1 TERABYTE microSD cards! Of course there's no such thing: and when the physical memory of the card is reached, your device will simply start overwriting data... and your precious photos, videos and other files will be gone forever. In fact, one third of all SanDisk cards on the market are counterfeit! You can avoid all this by installing and using a free app called SD Insight to determine if your card is legitimate.

エラーもなくカメラ写真やダウンロードした映画や動画、音楽ファイルの保存に役立っています。 まだ使い始めですが、今の所大満足です。

what a bargain got 400gb with a price of 128gb

同じSandisk Ultra Microsdxcの２００GBのマイクロｓｄカードもありますがスマホ装着時の書き込みは圧倒的に遅いです．

Tested the complete card with H2testw tool, 100% passed after some hours. Using it both in my Nintendo switch and switch lite with no issues!

سانديسك افضل شركة في صناعة الذاكرات انصح الجميع بها