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 Memory Card, White, MB-MJ256KA/AM

Product ID: 438933189

Details

Brand
Samsung
Compatible devices
Camera Drone
Flash memory type
Micro SD
Memory storage capacity
256 GB
Model name
inches

⏳Up to 140,000 hours recording endurance

⚡Read/Write speeds up to 100/40 MB/s

🛡️Rugged protection: water, drops, X-rays, magnets

Description

🎥 Capture Life’s Every Frame—Endurance That Never Quits!

MASSIVE 256 GB CAPACITY - Store thousands of hours of high-res video without worrying about running out of space.
MILITARY GRADE DURABILITY - Built to survive extreme conditions—waterproof, drop-proof, X-ray and magnet resistant for total peace of mind.
BLAZING FAST DATA TRANSFER - Experience seamless 4K and FHD video playback with up to 100MB/s read and 40MB/s write speeds.
5 YEAR WARRANTY TRUSTED BRAND - Samsung’s proven reliability backed by a 5-year warranty ensures your critical data is always protected.
UNMATCHED ENDURANCE FOR CONTINUOUS RECORDING - Record up to 16 years of footage without a hiccup—perfect for dashcams, CCTV, and body cams.

The Samsung PRO Endurance 256GB microSD card is engineered for professionals who demand relentless reliability. With up to 140,000 hours of continuous recording, ultra-fast 4K-ready speeds, and rugged protection against water, drops, magnets, and X-rays, it’s the ultimate memory card for security cameras, dashcams, and action cams. Backed by a 5-year warranty, it guarantees your most important moments are safely stored and effortlessly accessible.

Specifications

ASIN	B09WB3D5GQ
Additional Features	Wearout Proof, X Ray Proof
Best Sellers Rank	#3,461 in Computers ( See Top 100 in Computers ) #210 in Internal Solid State Drives
Brand	Samsung
Color	White
Colour	White
Compatible Devices	Camera, Drone, Gaming Console, Smartphone, Tablet
Compatible devices	Camera, Drone, Gaming Console, Smartphone, Tablet
Customer Reviews	4.7 out of 5 stars 9,271 Reviews
EU Spare Part Availability Duration	5 Years
Flash Memory Type	Micro SD
Flash memory type	Micro SD
Hardware Connectivity	microSDXC
Item Dimensions D x W x H	1D x 3W x 15H millimeters
Item Dimensions L x W	1L x 15W millimeters
Item Type Name	Memory Card
Item Weight	0.25 Grams
Manufacturer	Samsung Electronics
Media Speed	40 mb / s
Memory Storage Capacity	256 GB
Memory storage capacity	256 GB
Mfr Part Number	MB-MJ256KA/AM
Model Name	inches
Model Number	MB-MJ256KA/AM
Model name	inches
Read Speed	40 Megabytes Per Second
Secure Digital Association Speed Class	Class 10
UPC	887276591100
Unit Count	1 Count
Warranty Type	Limited

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