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 64GB MicroSDXC Memory Card with Adapter for Dash Cam, Body Cam, and security camera – Class 10, U1, V10 (MB-MJ64KA/AM)

Product ID: 467005246

Details

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

⏳Up to 35,040 hrs recording

⚡Read 100MB/s, Write 40MB/s

🛡️Water, X-ray & drop proof

SAR 1230

Duties & taxes included

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Sold byAmazon KSADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Record Fearlessly, Store Endlessly.

RUGGED RELIABILITY IN ANY ENVIRONMENT - Built to withstand drops, water immersion, X-rays, and magnetic fields—perfect for on-the-go professionals.
BLAZING SPEEDS FOR SEAMLESS 4 K PLAYBACK - Experience smooth transfers and crisp FHD/4K video with up to 100MB/s read and 40MB/s write speeds.
PEACE OF MIND WITH TRUSTED BRAND QUALITY - Samsung’s in-house DRAM and NAND ensure premium durability and performance you can count on.
UNMATCHED ENDURANCE FOR NONSTOP RECORDING - Engineered to last 35,040 hours of continuous video—never miss a moment in your dash or body cam.
COMPACT COMPATIBLE WITH ALL YOUR DEVICES - Lightweight 64GB microSDXC card with adapter, ready for your security cameras and monitoring gear.

The Samsung PRO Endurance 64GB microSDXC card is a rugged, high-performance memory solution designed for continuous video recording in security and monitoring devices. With up to 35,040 hours of recording, Class 10 speed ratings, and resistance to water, drops, X-rays, and magnets, it delivers reliable 4K/FHD capture and fast data transfers. Backed by Samsung’s industry-leading flash technology, it’s the ultimate choice for professionals who demand durability and peace of mind.

Specifications

ASIN	B09W9XYQCQ
Additional Features	Wearout Proof, X Ray Proof
Best Sellers Rank	#594,809 in Electronics ( See Top 100 in Electronics ) #524 in Micro SD Cards
Brand Name	Samsung
Colour	White
Compatible Devices	Camera
Country of Origin	China
Customer Reviews	4.7 4.7 out of 5 stars (8,783)
Flash Memory Type	Micro SD
Flash Memory Video Speed Class	V10
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-MJ64KA/AM
Media Speed	40 mb / s
Memory Storage Capacity	64 GB
Model Name	PRO Endurance
Model Number	MB-MJ64KA/AM
Number of Items	1
Read Speed	40 Megabytes Per Second
Secure Digital Association Speed Class	Class 10
UPC	887276591087
Unit Count	1.0 Count
Warranty Type	Limited

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