Features:

  • [Advanced SD 5. 1 standard] Support A1 and V30 High Performance grades of SD 5. 1 standard.
  • [V30 Grade for Hi-Speed video] V30 Grade satisfies high speed requirement of 4K UHD video. Ideal and compatible with high speed camera, DSLR, camcorder, dash am, surveillance, drone, including go Pro, Canon, Nikon, Sony, Panasonic, JVC, Olympus, DJI and others.
  • [A1 Grade for direct-run apps] A1 Grade allows phone apps to be executed from Micro SD/SD card.
  • [Excellent compatibility] compatibility with phones, tablets, laptop, PC including Samsung Galaxy S9 +, J8, Note 9 8, LG, Sony, Moto, HTC, HP, Dell, Lenovo, Asus, Acer and other devices.
  • [Global brand] Gigastone is a global brand of mobile accessory products, selling multiple millions of units worldwide each year. Our office is located in Irvine, CA and we have worldwide branches in Japan, China, Taiwan.
GOOD Value

Seems as solid and precision made as the more reputable brands, so far reliable and as fast as their same ultra HD ultra speed cards, but at a more reasonable cost.

Gigastone it is

Got this over other major brands to test out as it was cheaper, and happy to say I'm glad I did. I used in my Samsung galaxy tab E tablet and downloaded some games and apps and all ran fast compared to my old card. Then put into my new Nintendo Switch and downloaded all my digital games, with no issues and all games run much more smoothly than other brands. This may be due to the A1 V30 rating but I'm no expert, all I can say is I'm very happy with this purchase. Got 256gb A1 V30 U3 class 10.

Great memory card

Purchased Rexing dash camera, added this micro SD card and it provides a long recording time. Works great, others I tried failed to record properly.

Works fine thus far.

Popped this into my Samsung Note 9 and it saw it right away with no problem. Transfered about 14 gigabytes worth of pictures and videos to it and it accesses them the same as if they were still on the integral memory.

35$ for a 256 WOW!

So as you are probably skeptical I was myself hearing about all the fakes out there this seemed too good to be true! 35$ is what most decent 128's are going for! But, this was a rather high end 256 if you believed the packaging! Well, the packaging was correct! In a cheap USB 3.0 card reader I first did my speed tests and got 37 read 33 write making it a U3 class card and than it was on to putting some files on and taking them off. I started BIG, this was a update to my 128 Samsung evo U1 in my switch. It currently had 115 gig on it from my installs on my Switch. Took about 50 min to transfer that off the old chip averaging 35 mbps copying to hard drive. I than added a few files to the backup bringing it to 155 gig and put them back on the card. This took about an hour and 10 min averaging 33 mbps. Booted up the switch worked perfectly ran a few random Switch games worked flawlessly. I am very impressed with this upgrade and only wish I had done it sooner!

No issues

Using this in my Nintendo switch for game storage for a little over a month now, with no issues. No failures, things load quickly, I'm happy with this card.

Gigastone

Works great in my Samsung cellphone.

Works incredible incredible price must have

The price was incredible if you look in the store you cannot get a 16 gig for that price and it's for a phone very good price really good quality

Kudos to the seller for excellent customer service!

I bought this as an extra, and didn't get around to using it for about 8 months. The card worked fine, but the adapter was DOA. Contacted the seller and they promptly replaced the adapter with a working unit. So, a big KUDOS to the seller for making it right, quickly and efficiently. These adapters are constantly a problem, no matter the manufacturer. Am completely satisfied and would buy again.

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