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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🛡️ Capture Every Moment, No Matter What!

BLAZING FAST TRANSFERS - Experience seamless 4K and FHD video playback with up to 100MB/s read and 40MB/s write speeds.
TRUSTED SAMSUNG QUALITY - Crafted with in-house DRAM and NAND, backed by a 5-year warranty for peace of mind.
ENDURANCE THAT OUTLASTS TIME - Record nonstop for over 16 years with up to 140,000 hours of reliable video capture.
BUILT FOR THE HARSHEST CONDITIONS - Waterproof, magnet-proof, X-ray resistant, and drop-tested to keep your data safe no matter what.
PERFECT FOR PROFESSIONAL MONITORING - Optimized for dash cams, body cams, and security cameras to never miss a critical moment.

The Samsung PRO Endurance 256GB microSDXC card is engineered for continuous, high-resolution video recording with up to 140,000 hours of endurance. Featuring Class 10, U3, and V30 ratings, it supports smooth 4K and FHD playback with read/write speeds up to 100/40 MB/s. Built to withstand extreme conditions including water, magnets, X-rays, and drops, it’s the ultimate memory card for dash cams, body cams, and security cameras, backed by Samsung’s trusted 5-year warranty.

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Color	white
Special Feature	Portable
Read Speed	40 Megabytes Per Second
Item Weight	0.25 Grams
Warranty Type	Limited
Write Speed	40 mb/s
Hardware Interface	microSDXC
Secure Digital Association Speed Class	Class 10
Product Dimensions	1L x 15W mm
Manufacturer	Samsung
UPC	887276591100
Item model number	MB-MJ256KA/AM
Is Discontinued By Manufacturer	No
Item dimensions W x H	1 x 15 x 3 mm
Standing screen display size	7 Inches
RAM Size	256 GB
Hard Drive Interface	Solid State
Are Batteries Included	No
Item Weight	0.25 g

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

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