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Sandisk SDSQUAR-400G-GN6MA Ultra 400GB Micro SDXC UHS-I Card with Adapter, Black
- Ideal for premium Android-based smartphones and tablets
- Transfer speeds of up to 100MB/s
- Rated A1 for faster app performance3 and UHS Speed Class 1 (U1) and Speed Class 10 for Full HD video recording and playback
- Waterproof, temperature-proof, shock-proof, X-ray proof and magnet-proof
- Transfers up to 1200 photos a minute
- 10-Year Limited Warranty
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From the manufacturer
Capture and store even more hours of Full HD video 
With a breakthrough capacity of 400GB , you can store even more hours of Full HD video  on the card without worrying about running out of space.
Transfer speeds of up to 100MB/s 
Blazing transfer speeds mean that your content moves fast letting you move up to 1200 photos in a minute. 
Ideal for Android smartphones and tablets
SanDisk cards are compatible with Android smartphones and tablets.
Load apps faster with A1-rated performance 
Rated A1, the 400GB SanDisk Ultra microSD card is optimised for apps, delivering faster app launch and performance that provides a better smartphone experience.
Full HD video capture 
Class 10 speed rating allows you to shoot Full HD video and high-quality photos.
Designed to withstand harsh conditions
Built to perform in all conditions, this durable microSD card is waterproof, X-ray proof, shock-proof and temperature-proof .
SanDisk Memory Zone App  for easy file management
The SanDisk Memory Zone app  enables you to view, access and back up your files in one location. You can also free up space from your smartphone by moving files to your microSD card.
Ready to adapt
The SanDisk Ultra microSD UHS-I comes with a ready-to-use SD adapter, which is perfect for use with interchangeable-lens cameras.
|SanDisk Ultra microSDHC UHS-I 32GB||SanDisk Ultra microSDXC UHS-I 64GB||SanDisk Ultra microSDXC UHS-I 128GB||SanDisk Ultra microSDXC UHS-I 200GB||SanDisk Ultra microSDXC UHS-I 256GB||SanDisk Ultra microSDXC UHS-I 400GB|
|Transfer Speed, up to||98MB/s||100MB/s||100MB/s||100MB/s||100MB/s||100MB/s|
|Albums (12 3.5-min MP3 songs)||80 Albums||160 Albums||320 Albums||480 Albums||640 Albums||960 Albums|
|Photos (13.75 Megapixel JPEG/AVG. file size 3.5MB)||600 Photos||1200 Photos||2400 Photos||3600 Photos||4800 Photos||7200 Photos|
|Full HD Video (1920x1080p) in minutes||160 mins Full HD video||320 mins Full HD video||640 mins Full HD video||960 mins Full HD video||1280 mins Full HD video||1920 mins Full HD video|
|microSD card Dimensions||14.99 x 10.92 x 1.02mm||14.99 x 10.92 x 1.02mm||14.99 x 10.92 x 1.02mm||14.99 x 10.92 x 1.02mm||14.99 x 10.92 x 1.02mm||14.99 x 10.92 x 1.02mm|
|SD Adapter Dimensions*||31.75 x 23.88 x 2.03mm||31.75 x 23.88 x 2.03mm||31.75 x 23.88 x 2.03mm||31.75 x 23.88 x 2.03mm||31.75 x 23.88 x 2.03mm||31.75 x 23.88 x 2.03mm|
|Operating Temperature||-25 to 85 degrees Celsius||-25 to 85 degrees Celsius||-25 to 85 degrees Celsius||-25 to 85 degrees Celsius||-25 to 85 degrees Celsius||-25 to 85 degrees Celsius|
|Storage Temperature||-40 to 85 degrees Celsius||-40 to 85 degrees Celsius||-40 to 85 degrees Celsius||-40 to 85 degrees Celsius||-40 to 85 degrees Celsius||-40 to 85 degrees Celsius|
* The SanDisk Ultra 256GB microSDXC card in Frustration Free Packaging does not come with an SD adapter.
 Approximations; results and Full HD (1920x1080) video support may vary based on host device, file attributes and other factors.
 1GB=1,000,000,000 bytes. Actual user storage less.
 Up to 100MB/s read speed; write speed lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes.
 Based on 4.1GB transfer of photos (avg. file 3.5MB) with USB 3.0 reader. Results may vary based on host device, file attributes and other factors.
 Results may vary based on host device, app type and other factors.
 Full HD (1920x1080) video support may vary based upon host device, file attributes, and other factors.
 Download and instalation required;
Android is a trademark of Google Inc. The Android robot is reproduced or modified from work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attributions Licence.
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I bought this having already read the feedback from Amazon.com, which questioned the authenticity of the product. Those were other sellers though, Amazon Australia sells this one direct.
I am fairly certain that this product is genuine, and I have used h2testw.exe to test the size to make sure it's accurate. I definitely got 128gb, and the read/write speeds were close enough. It inserts nicely into my galaxy s9 and copies data relatively quickly. You also get a microSD to SD adaptor which is handy.
Happy with it so far.
UPDATE 21/6/19: I had initially purchased the 128GB version of this card for my Nintendo Switch, but having run out of space for games I decided to give this one a go at 400GB. It works flawlessly as the previous card did, so now I have a lot more room for games. The price of the card has come down, so the 400GB is the best value per GB.
Package was handed to resident".
I was not aware that sticking the envelope containing my MicroSD card and its adapter into my mailbox was the same thing as physically handing me the parcel. Please be honest in future. There is a good Amazon.
Having said that, I ordered this item from Shopping Square Australia, and they exceeded Amazon's estimates of when the item would arrive, and then some. The estimate was 5 - 12 November, and I have it on the first. So Shopping Square Australia, give yourselves a pat on the back for being prompt. Thank you.
The card itself seems to work fine. I am in the midst of converting all of the songs from my now-pooed-the-bed iPod Classic to FLAC so I can play them on my NW-A55 and whilst the USB connection to the player is only USB 2.0, so far the card has taken somewhere around 64 gigabytes of my music without a protest. It will be interesting to see when I finish transferring all of the 140+ gigabytes of music from the Classic onto this card, but also when I start buying some of the 96 kHz music that I have been wanting to buy and play for a while now.
Long story short, if you need a MicroSD card for a new music player, want to get the best price-per-gig ratio, and want some "hi-res" music, you could do far worse than the 200gig Sandisk Ultra, and far worse than Shopping Square Australia to get it to you. Cheers.