Integral 256GB Micro SD Card 4K Video Premium High Speed Memory Card SDXC Up to 100MB s Read and 50MB s Write speed V30 C10 U3 UHS-I A1

I am extremely impressed with its performance. This card is perfect for 4K video recording, fast data transfer, and running apps smoothly. I’ve used it in my smartphone and camera, and it has handled large video files and high-resolution photos without any issues.The speed is incredible, with fast read and write speeds that ensure quick file transfers and seamless video recording. I’ve been able to record 4K footage with no lag or stuttering, and it’s also great for expanding storage on my device.The card is also durable, with excellent build quality, making it resistant to water, temperature fluctuations, and shock. If you’re looking for a reliable, high-speed micro SD card for your devices, I highly recommend the Integral 128GB V30 Micro SD Card. Great value and performance!

Works well with action camera in terms of read and write seemed quick there were no formatting issues so it’s been easy to use. It doesn’t seem to effect pictures quality, its capacity is good and it came at a good cost so I would but it again if I need another.

I took a punt and ordered the 512GB ultimaPRO model on the 27th Dec19 at a price of £57.99. I say punt as a lot of the reviews for the 128GB and 256GB variants were negative, so I was somewhat sceptical as similar other branded products were marked up at £80+. I can only presume these reviewers fall into one of the following situations:• Did not purchased directly from Amazon and ended up with a random unscrupulous 3rd party seller, which supplied a counterfeit item.• The product was a bad apple of the batch that should of been returned within the returns time window. Alternatively the manufacturer contacted since my item states it has a 5 YEAR warranty, meaning it would of been replaced free of charge.• Misuse/understanding of the product and its limitations (more on this below).Amazon delivered the item on time with my Prime subscription, so no issues there. The MicroSD card arrived in simple packaging, plastic casing held together by cardboard with the items specs accompanied product branding.Speed wise the empty card matched the declared specification from integral, my screenshot shows the benchmarking and Windows 7 file transfer speed. I conducted my testing using a USB 3.0 Lexar MicroSD card reader (as per the attached photographs) with the intended use being to hold MP3 and FLAC music files for my FIIOX3 2nd Gen. So speed wise it lives up to my expectations, though time will tell if this continues to hold true for the life span of this product.A lot of buyers are either unaware or do not understand the difference in storage space advertised and actual available space. The manufacture states on the packaging that 1GB is equal to 1,000,000,000 bytes (one billion bytes), which is a multiple of 1,000 (one thousand). However, most modern operating systems use a multiple of 1,024 (one thousand and twenty four), this leads to the disparity in advertised and available storage size. Using the 128GB microSD card as an example:• Manufacture: 128GB (12,000,000,000 bytes) : 1000 x 1000 x 1000 x 128• Operating system: 128GB (137,438,953,472 bytes) : 1024 x 1024 x 1024 x 128As you can tell the operating system sees 128GB as a higher number, due to the higher multiple. So your actual raw capacity seen by the operating system before formatting would be around 122GB+/-. Now format your MicroSD card and add the file system reduces the space further, my Samsung 128GB card this 512GB version is replacing has 119+/-GB once fully setup.Referring to my third bullet point and product limitations, the main one I believe is the item's operating temperature. I managed to thermal throttle the MicroSD card when attempting to copy 500GBs of files in one sitting, causing the card to disconnect. Whilst this card is capable of storing a large volume of data, files should be copied in small batches to allow the MicroSD card to cool in-between. I verified file integrity using SHA1 and MD5 hashes comparing both source and destination files. I investigated the heat issue by applying direct cooling either side of the card (two PC fans blowing cool air at it). This made considerable difference permitting me to copy the full capacity though at a reduced transfer speed and no disconnects.Overall a brilliant card at an attractive price, I hope it stays this way and is reliable

Because the switch has such low storage, I needed an sd card, I got a cheap one (this one) and it works great, plenty of storage on it, no formatting need to be done, just plug it in and download. The most minor thing I would change is making the card back so it blends in with the switch a bit better, but because it's almost always covered, it doesn't really affect it.

Came in a nice little aluminium box. 2 SD cards and 1 adapter though I don't know anyone who needs the adapter anymore. The cards work fine though I haven't yet tested speeds when writing large amount of data at once, but even cheap knock offs work initially. Integral offer a 5 year guarantee, so I will update this review if I have to claim. Hopefully, not. Purchased 128GB version after 64GB version realising that 128GB was better value. So far, writing 7.5GB was a breeze with no speed loss during transfer.

I'm really pleased with my purchase from this seller. A great quality product at a reasonable price. Thank you.

As described. Good picture and sound quality works well memory card good size functionality good works well as detail ed by seller