Samsung

Samsung PRO Endurance 128GB 100MB/s (U1) MicroSDXC Memory Card with Adapter (MB-MJ128GA/AM)

Name: Samsung PRO Endurance 128GB 100MB/s (U1) MicroSDXC Memory Card with Adapter (MB-MJ128GA/AM)
Brand: Samsung
SKU: B07B984HJ5
Price: 62.99 USD
Availability: OutOfStock

Bottom line: The Samsung PRO Endurance 128GB 100MB/s MicroSDXC Memory Card with Adapter ($62.99 on Amazon as of 2026-10-21 08:15 UTC): Rated for up to 43,800 hours of 4K and 1080p recording; main trade-off: U1 speed class only, below the U3 some 4K cams require.

$62.99

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Buy on Amazon — $62.99 Compare to similar PC & gaming hardware

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-21

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

Pros & Cons

Pros

✓ Rated for up to 43,800 hours of 4K and 1080p recording
✓ 5-year limited warranty on the 128GB model
✓ Five-proof build: water, shock, temperature, X-ray, magnet
✓ Full-size SD adapter included for laptop card readers

Cons

✗ U1 speed class only, below the U3 some 4K cams require
✗ 100MB/s is read-focused; write speed is not specified
✗ Built for write-heavy video, not phone or tablet app storage
✗ Operating range starts at -13F, a limit in extreme cold

Manufacturer description

Samsung's PRO Endurance 128GB microSDXC card is purpose-built for the one job most memory cards fail at: writing video continuously, day after day, without dying. Samsung rates this card for up to 43,800 hours of 4K and Full HD 1080p recording and playback, which is the reason it shows up in dash cams, home security cameras, CCTV recorders, and body cams rather than in phones or drones. That endurance rating is the headline spec, and it is what separates a PRO Endurance card from a standard microSD that gets rewritten to failure in a season of loop recording. Transfer speeds reach up to…

SpecPicks Verdict

SpecPicks scored Samsung PRO Endurance 128GB 100MB/s MicroSDXC Memory Card with Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Samsung's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How long will this card last in a dash cam?

Samsung rates the PRO Endurance line for up to 43,800 hours of 4K and Full HD 1080p recording and playback, and the 128GB model carries a 5-year limited warranty.

Does it come with an SD adapter?

Yes. The MB-MJ128GA/AM ships with a full-size SD adapter, so you can read footage in a standard laptop or desktop SD card slot.

Will it survive cold weather in a car?

Samsung lists an operating temperature range starting at -13F and rates the card temperature-proof, along with water-proof, shock-proof, X-ray-proof, and magnetic-proof.

Is this fast enough for 4K security cameras?

It is rated U1 with transfer speeds up to 100MB/s and is specified for 4K and 1080p recording. If your camera's manual requires a U3 card, check that requirement before buying.

Can I use it in a phone or tablet instead?

You can, but it is designed for write-intensive video monitoring in dash cams, surveillance cameras, CCTV, and body cams. Check the product listing for compatibility with other devices.

Key Features

Designed specifically for video monitoring cameras (dash cams, surveillance & security cams, CCTV, body cams, etc.)
Up to 43,800 hours of 4K and Full HD (1080p) recording and playback
Reliability Built to Last – Water-proof, Shock-proof, Temperature-proof, X-ray-proof, Magnetic-proof
Transfer speeds up to 100MB/s

Full Specifications

Brand	Samsung
Color	['White']
Model Name	PRO Endurance
Read Speed	100 megabytes_per_second
Unit Count	1 Count
Media Speed	30
Model Number	MB-MJ128GA/AM
Built-In Media	MicroSD Memory Card and Full-Size Adapter
Item Type Name	Samsung 128GB 100MB/s (U1) Pro Endurance Micro SD Memory Card with Adapter (MB-MJ128GA/AM)
Mfr Part Number	MB-MJ128GA/AM
Flash Memory Type	Micro SDXC
Compatible Devices	Camera
Additional Features	Drop Proof, Magnetic Proof, Temperature Proof, Water Proof, X Ray Proof
Warranty Description	5 Year
Hardware Connectivity	microSDXC
Item Dimensions L x W	5.43"L x 3.5"W
Memory Storage Capacity	128 GB
Global Trade Identification Number	00887276260129

Ready to buy?

Samsung PRO Endurance 128GB 100MB/s (U1) MicroSDXC Memory Card with Adapter (MB-MJ128GA/AM) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $62.99

*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.

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