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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🛡️ Endurance Meets Speed — Never Miss a Moment

BLAZING FAST TRANSFERS - Experience seamless 4K and FHD video capture with up to 100MB/s read and 40MB/s write speeds.
MASSIVE 256 GB CAPACITY - Store vast amounts of high-resolution footage without worrying about running out of space.
PEACE OF MIND WARRANTY - Backed by a 5-year warranty, ensuring your critical data is protected long-term.
UNMATCHED ENDURANCE FOR 16 YEARS - Record continuously up to 140,000 hours without compromise—built for relentless monitoring.
RUGGED RELIABILITY IN ANY ENVIRONMENT - Engineered to withstand water, drops, magnets, X-rays, and extreme temperatures—your data’s fortress.

The Samsung PRO Endurance 256GB microSDXC card is purpose-built for continuous high-resolution video recording in demanding environments. With up to 140,000 hours of recording life, Class 10 U3 V30 speed ratings, and rugged protection against water, drops, magnets, and X-rays, it’s the ultimate storage solution for dash cams, body cams, and security cameras. Backed by a 5-year warranty, it guarantees reliable, high-speed performance and peace of mind for professionals who demand durability and precision.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Write Speed	40 mb / s
Hardware Interface	microSDXC
Secure Digital Association Speed Class	Class 10
Product Dimensions	1L x 15W Millimeters
Manufacturer	Samsung
UPC	887276591100
Model	MB-MJ256KA/AM
Item model number	MB-MJ256KA/AM
RAM Size	256 GB
Flash Memory Installed Size	256 GB
Flash memory type	Micro SD
Digital storage capacity	256 GB
Special Features	Wearout Proof, X Ray Proof
Number of items	1
Standing screen display size	7 Inches
Batteries Included	No
Batteries Required	No
Does it contain liquid?	No
Item Weight	0.25 g

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

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