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)

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

⚡100/40 MB/s read/write speed

🛡️Water, X-ray, magnet & drop proof

€ 613.27

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Description

🛡️ Record Fearlessly, Store Endlessly — The PRO Endurance Advantage

BLAZING FAST TRANSFERS - Class 10, U3, V30 speeds up to 100MB/s read and 40MB/s write for seamless 4K video handling.
PEACE OF MIND WITH 5 YEAR WARRANTY - Long-term protection backed by Samsung’s trusted warranty for serious users.
OPTIMIZED FOR PROFESSIONAL MONITORING - Perfect for dash cams, body cams, and security cameras ensuring critical footage is always safe.
RUGGED RELIABILITY IN ANY ENVIRONMENT - Built to withstand water, drops, magnets, X-rays, and extreme temperatures—your data’s fortress.
UNMATCHED ENDURANCE FOR NONSTOP RECORDING - Engineered to last up to 140,000 hours—capture every moment without worry.

The Samsung PRO Endurance 256GB MicroSDXC card is a high-performance, ultra-durable memory solution designed for continuous video recording in demanding environments. With up to 140,000 hours of recording life, fast 4K-capable speeds, and robust protection against water, drops, magnets, and X-rays, it’s the ultimate choice for professionals relying on dash cams, body cams, and security systems. Backed by a 5-year warranty, it guarantees peace of mind and unmatched reliability.

Specifications

ASIN	B09WB3D5GQ
Additional Features	Wearout Proof, X Ray Proof
Best Sellers Rank	#564,371 in Electronics ( See Top 100 in Electronics ) #524 in Micro SD Cards
Brand Name	Samsung
Colour	White
Compatible Devices	Camera
Customer Reviews	4.7 4.7 out of 5 stars (8,726)
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

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€ 613.27

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In stock

Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Finland.

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