Gigastone64GB 5-Pack Micro SD Card, 4K UHD Video, Surveillance Security Cam Action Camera Drone Professional, 90MB/s Micro SDXC UHS-I A1 Class 10, with Adapters

Not as advertised. Purchased 4K UHD U3 micro SD and received Full HD U1 micro SD. They are not the same thing.

Not what is pictured or described. Pay attention to what you get. It’s supposed to be 4K and U3. I got a UHD and U1. It’s a micro SD so it already small and the fonts are even smaller so if you don’t look closely at it you could miss this detail. I really hope this was not what the seller was banking on. So one star because it was not the item pictured or described.

I had a shorting issue with my 3D printer ruining SD cards. (finally found the short and fixed it). Not wanting to keep wasting money on high-brand-name cards, I ordered these Gigastone SD cards. They work great so far. No issues. I installed the controlling software for the 3D printer easily and it is now working again - yay.I also put two inside of my security cameras and two more in my 3D printer monitoring cameras. All five cards are working great with no issue in any device.What really surprised me was that these came with a USB-to-microSD reader. I did not remember seeing that in the product description. This made setting up the 3D printer very easy and it makes working with the SD cards easier since the only reader I have is attached to my CAD/CAM computer. Now I can use the USB device to read SD cards on my laptop.Win-win for me.

Purchased for use in my camera for shooting 1080p video. This card has ample storage and no problems with read/write speeds. Ive only recorded about 3 hours of video so far, I will update in the future if I have any issues. So far, I am satisfied with this card and the price.

Could not be formatted. bad out of box. Would not work in Android phone, tablet or PC. Just trash. Not even worth returning. Just bought a replacement from a better brand. Totally worthless until I found I could use it as spacer shim to level my desk.

This card formats to 124GB instead of the full 128GB. If you want to use this for 128GB game images, they will not fit.I thought I would try the card out due to its low price, put you get what you pay for.I'm sticking to Samsung from now on.

I purchased the 5 x 64 GB package. I did a speed test in Linux using GNOME Disks and I was getting 90+ MB/s while doing a read-only test and 40+ MB/s while doing a read + write test. I was only able to achieve these speed using my Ankur USB 3.0 memory card reader. When using the included USB 2.0 adapter I was only reaching a little over 20 MB/s for both read and write. The performance and capacity was really good for the price.

I bought this to use on a smart TV for playback storage... After several tries of resetting it reformatting it and retrying again, the memory card is finicky at best... Many times after pausing a TV show and returning to it a little while later while still in pause, p the card wouldn't even be read, or it would stop in the middle of the recording and freeze up, or it would work for a while and then have to be reformatted again to make it work again... If you're looking to use this on a smart TV keep looking, I just don't think that this card can handle it

I got this for the nintendo switch and it fits perfectly. It’s a micro sd card of 64gb and a great price.

Will only format to 116gb needed to get at least 119gb or better. Not happy buy Sandisk

Great value not quite as fast as others but they cost twice as much. This card works perfectly with my Sony A7r iii and I shoot in Raw always.9

We bought this to go in our security camera, keeping an eye on our three dogs 🐶, works well, no complaints.

Product formatted instantly, no messing about, Good Micro SD card, great value. Would recommend it to anyone.