Name: Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10
Brand: Samsung
SKU: cmnxmadta5g4tjxr2xqetemaz
Availability: InStock

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Description

Extreme endurance for monitoring devicesTake the worry out of always-on recording. Engineered to deliver longest lasting performance, the Samsung PRO Endurance is a perfect fit for CCTV, dash cams, and body cams. Capture your crucial moments in high-resolution, even in harsh conditions.Built to last up to 140K hours of recordingAstoundingly reliable stamina. With capacities up to 256GB[1] , the PRO Endurance records and rewrites up to 140K hours (over 16 years)**]. Plus, your data is secured with a limited warranty up to 5 years.Record and play in FHD/4KThe PRO Endurance optimises handling of large video files with read/write speeds up to 100/40MB/s[2]. Plus, FHD and 4K resolution support ensures that crucial moments are recorded in immense clarity and detail for the times you need them the most.Critical data. Safeguarded.From severe weather to extensive wear and tear, the PRO Endurance stands up to real-world situations. It is rigorously tested and proven resistant to magnets[3] , X-rays , water , drop , wearout , and withstands operating temperatures ranging from -25°C to 85°C.World's No.1 Flash MemoryExperience the superior performance and reliability that you can get from the world's number one brand for flash memory since 2003. All firmware and components, including Samsung's world-renowned DRAM and NAND, are produced in-house, allowing end-to-end integration for quality you can trust.

Specifications

Capacity	256 GB
Flash card type	MicroSDXC
Read speed	100 MB/s
Write speed	40 MB/s
Internal memory type	UHS-I
UHS Speed Class	Class 3 (U3)
Video Speed Class	V30
Flash memory class	Class 10
Product colour	White
Mean time between failures (MTBF)	10000 h
Endurance	10000 cycles per logical sector
Certification	CE(UKCA)/FCC/VCCI/RCM
Memory voltage	2.7,3.6 V
Operating temperature (T-T)	-25 - 85 °C
Storage temperature (T-T)	-40 - 85 °C
Width	15 mm
Depth	1 mm
Height	11 mm
Weight	0.25 g
Quantity per pack	1 pc(s)
Memory adapter included	SD
Harmonized System (HS) code	85235190
Voltage	2.7~3.6V
Compatible products	Surveillance (IP/Home/Network) cam, Dash cam, Body cam, and other always-on applications.
Compliance certificates	Federal Communications Commission (FCC), CE, VCCI, RCM, UKCA

Full specifications

Marque	Samsung
Référence fabricant	mbmj256ka/eu
EAN	8806092767263

Overview of the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10

The Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 is a well-regarded reference in the Informatique category. In 2026, it remains one of the most relevant choices for those seeking to balance quality and budget. The brand Samsung has a strong reputation among consumers, reflected in its consistent availability across many partner retailers. Thanks to our comparison tool, you can see all available offers at a glance and go directly to the retailer of your choice to complete your purchase with confidence.

What makes the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 stand out in 2026

This product stands out for the build quality that is characteristic of the Samsung brand. Users particularly appreciate its reliability in daily use and how easy it is to get started right from the first use. The design, intended for regular use, ensures satisfying durability, and the balance between the features offered and the asking price is well received by buyers. Samsung has a strong reputation in the Informatique category, which makes it easy to access after-sales service and the manufacturer warranty when needed. You can also compare with the Samsung LS34C652UAU computer monitor 86.4 cm (34") 3440 x 1440 pixels Wide Quad HD LED Black to refine your choice.

Performance and key features

In the Informatique category, buyers pay close attention to declared performance and build quality. The Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 meets these expectations with technical specifications that reflect Samsung's positioning on this segment. The key features, available in the spec sheet on this page, allow you to verify this product matches your needs before finalising your purchase. Also compare with the Samsung LS34C652UAU computer monitor 86.4 cm (34") 3440 x 1440 pixels Wide Quad HD LED Black from the same brand to refine your decision.

Design and ease of use

The Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 is generally described as intuitive by users in the Informatique category. Samsung designed this product to be accessible from the first use, whether you are a beginner or an experienced user in this range.

Market price ranges in 2026

Range	Indicative price	For whom	What you get
Entry-level	Under 384300 £	Tight budget, occasional use	Essential features, reliable for beginners
Mid-range	384300 £ to 896710 £	Regular daily use	Good value for money, solid performance
High-end	Over 896710 £	Demanding users	The best of the category, all advanced features

To find the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 at the best price today, compare all available offers on Compiral. Our comparison tool updates prices several times a day to ensure you get the lowest rate from our partner retailers. Remember to activate the free delivery filter to reduce the total cost of your purchase. Also check the estimated delivery time at each retailer, which can vary considerably from one shop to another.

Frequently asked questions about Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10

Is the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 worth its price in 2026?

In 2026, the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 is listed from £127.99 at our partner retailers. This price is consistent with the positioning of Samsung in the Informatique category. To judge whether this price is currently attractive, check the price history on our product page. Also compare the total price including delivery to avoid any surprises at checkout.

What warranty does the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 come with?

The Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 generally comes with a manufacturer warranty of 1 to 2 years depending on the retailer. In addition to the commercial warranty from Samsung, statutory consumer rights apply to all purchases. Check the warranty conditions directly on the retailer's page before finalising your order.

Is the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 in stock?

Stock availability for the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 is updated in real time on Compiral. Retailers showing "In stock" can usually deliver quickly, often within 2 to 5 working days. If the product is temporarily out of stock at one retailer, check the other offers in our table. Check back regularly as stock levels change frequently in the Informatique category.

Where can I buy the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 at the best price?

To buy the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 at the best price, compare all available offers in our table at the top of this page. The 3 offers listed include delivery costs to give you the true total cost. Sort by ascending price and filter by free delivery to quickly identify the best deal among our verified partner retailers.

How does the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 compare to competitors in the Informatique category?

In the Informatique category, the Samsung MB-MJ256K 256 GB MicroSDXC UHS-I Class 10 occupies a specific market segment. Compared to other available models, it stands out mainly through the balance between its features and its price. To compare objectively, consult the detailed spec sheet on this page and compare specifications with other similar products listed on our comparison tool.