Samsung PRO Endurance microSDXC Card 128GB
- Memory Storage Capacity: 128 GB
- Flash Memory Video Speed Class: V30
- Flash Memory Type: Micro SD
- Hardware Connectivity: microSDXC
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A dependable microSD card for continuous-loop recording devices like dash cams and security cameras, not a card for high speed photo bursts.
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ASIN: B09WB1857WModel: MB-MJ128KA/AMCategory: MicroSD Cards
Overview
A 128GB microSDXC card built for round the clock overwrite cycles in dash cams, body cams and home security systems, rated Class 10, U1 and V10. Samsung backs it with a multi-year warranty and includes a full size SD adapter.
This is a microSD card, not the solid state drive some of the listing copy references. Its V10 speed class supports steady FHD and 4K recording rather than the burst speeds photographers look for in a U3 or V30 card. Samsung rates the line for up to 140,000 hours of continuous recording at higher capacities and for holding up across a wide operating temperature range, which is the point of an endurance card over a standard one.
- 128GB microSDXC, Class 10 / U1 / V10
- Rated for continuous overwrite recording
- Operating range -25C to 85C
- Includes SD adapter
Who it's for
Suits anyone running a dash cam, home security camera or body cam that records and overwrites footage continuously. Not the choice for burst photography or 4K video work that needs sustained write speeds higher than V10 provides.
Pros and cons
- Built for continuous loop recording rather than one-time storage
- Rated across a wide -25C to 85C operating range
- Includes a full size SD adapter
- Backed by a multi-year warranty
- V10 speed class trails U3/V30 cards for burst photography
- 128GB capacity records less footage than the 256GB version
Performance notes
The card is engineered for repeated overwrite cycles rather than one time storage, with Samsung rating higher capacity versions for up to 140,000 hours of recording. It operates across a wide temperature range from -25C to 85C and is built to hold up against water, drops and magnetic exposure, which matters for a card living inside a dash cam or an outdoor security camera.
Where it stands among microsd cards
- #7 most-searched brand and model of the 27 microsd cards lines we track (by search demand, not sales).
From the specs of the 17 microsd cards we list; not a test result.
Specifications
| Brand | Samsung |
|---|---|
| Model | MB-MJ128KA/AM |
| Dimensions & fit | |
| Item Dimensions L x W | 0.6 × 0.4 inches |
| Capacity & performance | |
| Memory Storage Capacity | 128 GB |
| Flash Memory Video Speed Class | V30 |
| Secure Digital Association Speed Class | Class 10 |
| Construction & materials | |
| Color | White |
| Compatibility & installation | |
| Hardware Connectivity | microSDXC |
| Included components | |
| Number of Packs | 1 |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Description | 5 years |
| Warranty Type | Manufacturer |
| Other details | |
| Flash Memory Type | Micro SD |
| Number of Items | 1 |
| Mfr Part Number | MB-MJ128KA/AM |
| Additional Features | Drop Proof |
Closest rivals on specs
Patriot V30 A1 microSD Card 64GB- Memory Storage Capacity 128 vs 64 GB (+100%)
Frequently asked questions
Is the Samsung PRO Endurance MB-MJ128KA/AM a microSD card or an SSD?
It is a 128GB microSDXC card. Some of the listing text references Samsung's portable SSD line, but this product ships as a microSD card with a full size adapter.
Will this Samsung PRO Endurance card work in a dash cam?
Yes, it is built for that use, rated Class 10, U1 and V10 for the continuous overwrite recording dash cams and security cameras do.
What operating temperature can the Samsung PRO Endurance 128GB handle?
Samsung rates it from -25C to 85C, which covers a dash cam left in a hot or cold vehicle.