Teclast UHS-I U1 Alta Velocidad 32 GB Micro SD / TF / Tarjeta de Memoria con Función Impermeable

I got this 128G TF card to use with my tablets. So far it has worked perfectly in my testing. I always keep a couple of spares around for my future needs. So I own several memory cards and I always do a speed test to verify the reading and writing speeds before I install the memory. This card checked out extremely well. The fastest write speed on this card was 48.143 MB/s and the fastest reading speed was 89.368 MB/s.
I am amazed at how well these work and how low the price has gotten on a sale day. Putting one of these into your phone or tablet is a wonderful upgrade to the device’s storage capability. Overall, this card worked well and I rated it five stars. If I have any future issues I will update my review.

Jun 03,2019

Very good buy, great price. Main features: original flash memory particles ensure smooth data transmission, reliable performance and longer life; UHS-1 U1 class speed level, maximum read speed is 90MB/s; waterproof, high/low temperature resistant, shock resistant, anti-magnetic, anti-X ray; support 24h 4K video continuously recording; applicable to mobile phones, DVR, tablet PC, cameras, drones. Speed: read speed: 50-90 MB/s, write speed: 30-50MB/s. I recommend it to everyone at every opportunity.

Aug 02,2019

Much better speeds than anticipated for the price. I tested the card several times with cristal disk mark. The results were similar. I had reads of 85-90 mb/s and writes of 35-40 mb/s. In random acccess it actually outperformed a kingston card of the same capacity, which is a more established brand and costs more. You need your own SD adapter, it does not come included. I would definitely buy this brand again when I need another card.

Aug 20,2019

Like the title says, I asked for this micro SD card, which is at waterproof made by the way, and give nothin' more but space enough for everything and more a pair of boots. Jokes aside, it was really cheap comparing the free space it gives and the size it has (micro SD), so I'm really happy for have it and I recommend to everyone who likes to keep a lot of files like me.

Aug 03,2019

I ordered these Teclast micro-SD cards mainly for the low price per GB. With a special deal by Gearbest the 128 GB card cost me only $12.29. After receiving the cards I immediately tested these cards, because in the past I have encountered many fake memory cards by ordering online. Luckily these cards proved to be without errors and offering full capacity (always a couple of % less than the rated capacity, but that is common practice for calculating memory). What really surprised me was the speed. I did not have very high expectations for such cheap memory cards and would be content with about 10 MB/s writing speed (minimum required for a class 10 card) and faster would be a bonus. After the test for errors with H2testw-software I saw amazing high speeds:
Writing speed: 53.0 MByte/s
Reading speed: 71.9 MByte/s

Ofcourse H2testw-software is not really meant for testing speeds, but it gives a good indication. With the Corona virus around the Dutch governments strongly advices people to stay at home unless really necessary. I now have more time to do some real speed testing with CrystalDiskMark.
The sequential speeds were very high:
61.88 MB/s writing and 91.86 MB/s reading.

The random speeds were a bit disappointing (after the high sequential speeds):
1.10 MB/s writing and 4.47 MB/s reading.

For my usage of these cards in digital camera's the low random speeds are no issue, because camera's write large files sequentially to the card. So I now have very fast micro-SD cards for amazing low price. Currently the price is higher at Gearbest, but $18.99 is still cheap for a fast 128 GB micro SD card.

Apr 19,2020