On a technical level, what exactly makes these have a longer lifespan than the standard samsung micro sd cards?

It is MLC. I attached link. https://news.samsung.com/global/video-5-years-vs-3-months-samsungs-new-pro-endurance-memory-cards

Does it support Blackvue DR900s 2ch?

I've had this in my Blackvue DR900S-2CH for nearly 2 years without any issues. I previously had a Sandisk High Endurance card and it would randomly reboot every few weeks. This Samsung card has been rock-solid

Does 32gb work well for tesla sentry?

Yes, I have both the 128 and 32 as a backup for my Tesla, both work great. If you go above 32 you have to use another program to format to fat 32, but it’s not difficult.

Is the 32gb pre-formatted to fat32?

Just as an FYI, if you have a card reader for your PC, there are free programs that'll allow you to reformat any SD/HDD/SSD to FAT32--even the largest ones. (one utility is "fat32format") The inability to format cards >32GB as FAT32 from within the built-in Window's utilities is an arbitrary limitation they've set, essentially removing our choice in the matter for whatever reasons. The actual maximum partition size for FAT32 is 2TB. I've found this often also gets around many devices' supposed maximum supported card size--the max size they claim is based on the version of ExFAT/licensing that's legal for the device, and if they didn't license ExFAT support in the firmware, they usually only claim a 32GB max, however I've run FAT32 formatted cards of 64/128GB in more devices than I can remember that said they couldn't do it... but they did when it was the correct format.

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SAMSUNG PRO Endurance 256GB MicroSDXC Memory Card with Adapter for Dash Cam, Body Cam, and security camera – Class 10, U3, V30 (MB-MJ256KA/AM)

Product ID: 458253496

Details

Brand
Samsung
Colour
White
Compatible Devices
Camera
Flash Memory Type
Micro SD
Item Weight
0.25 Grams
Memory Storage Capacity
256 GB

⏳140K hours recording endurance

⚡100/40MB/s read/write speed

💾256GB high-capacity storage

C$39249

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Capture Every Moment, Endure Every Challenge

BLAZING FAST TRANSFER SPEEDS - Experience seamless 100MB/s read and 40MB/s write speeds for quick file access and transfers.
MASSIVE 256 GB STORAGE CAPACITY - Store thousands of hours of FHD/4K footage, ensuring you never miss a critical moment.
UNMATCHED ENDURANCE FOR 16 YEARS - Record continuously up to 140,160 hours without compromise—built for relentless monitoring.
OPTIMIZED FOR PROFESSIONAL MONITORING - Perfectly engineered for dash cams, body cams, and security cameras with Class 10, U3, V30 certification.
RUGGED RELIABILITY IN ANY ENVIRONMENT - Waterproof, X-ray proof, magnet resistant, and drop tested up to 5 meters—ready for any challenge.

The Samsung PRO Endurance 256GB MicroSDXC card is a professional-grade memory solution designed for continuous high-resolution video recording. With up to 140,000 hours of endurance, 256GB capacity, and fast 100/40MB/s speeds, it excels in harsh conditions—resisting water, magnets, X-rays, and drops—making it ideal for dash cams, body cams, and security cameras.

Specifications

ASIN	B09WB3D5GQ
Additional Features	Wearout Proof, X Ray Proof
Best Sellers Rank	#603,797 in Electronics ( See Top 100 in Electronics ) #555 in Micro SD Cards
Brand	Samsung
Brand Name	Samsung
Colour	White
Compatible Devices	Camera
Customer Reviews	4.7 out of 5 stars 9,496 Reviews
Flash Memory Type	Micro SD
Flash Memory Video Speed Class	V30
Hardware Connectivity	microSDXC
Item Dimensions L x W	1L x 15W Millimeters
Item Type Name	Memory Card
Item Weight Unit of Measure	0.25 Grams
Manufacturer	Samsung Electronics
Manufacturer Part Number	MB-MJ256KA/AM
Media Speed	40 mb / s
Memory Storage Capacity	256 GB
Model Name	PRO Endurance
Model Number	MB-MJ256KA/AM
Number of Items	1
Read Speed	40 Megabytes Per Second
Secure Digital Association Speed Class	Class 10
UPC	887276591100
Unit Count	1.0 Count
Warranty Type	Limited

Reviews

C**S

Working well.

So far these are working great in our security cameras. They are more than fast enough and have lots of space. Great brand! 5 stars.

12.11.2024

G**0

Reliable and authentic

Shipped quickly and packed well. Item is genuine/authentic according to Samsung's Samsung Card-UFD Authentication Utility available for Windows download at the Samsung consumer storage support tools website.

9.07.2023

E**O

Coloquei na câmera de segurança da marca Tapo.ficou bom.

Chegou aqui em Fortaleza perfeitamente!

27.12.2025

Y**R

this is must have for dashcams

after reading reviews about cheap SD cards failing after few months, I decided to not take any chances and get this Samsung high endurance cad. I test them to make sure they are not fakes (this is an ongoing issue with amazon Samsung cards). I also tested the read/write speeds and they are within what they claim. also I got them on sale which sweetens the deal even more.

2.01.2024

D**…

Samsung halt ;)

Langlebig, robust und schnelle Übertragung.

25.05.2025

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