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20 Feb, 2026
Samsung MB-MJ128K 128 GB MicroSDXC UHS-I Class 10
£34.96
£41.95 inc. VAT
Out of Stock(0)MPN: MB-MJ128KA/EU
🚚 Next-day delivery £4.95
Quantity:1
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Key Features
Samsung PRO Endurance MB-MJ128KA
Flash memory card (microSDXC to SD adapter included)
128 GB
Video Class V30 / UHS-I U3 / Class10
microSDXC UHS-I
white
Product Overview
AI-generated summary
This is a pretty decent, no-fuss microSD card from Samsung for the money — the kind of thing you buy when you want reliability in everyday gear rather than chasing top-end speeds. For anything like dash cams that don’t demand sustained high write rates, Android phones/tablets, cameras or action cams (especially if they’re not doing heavy continuous recording), it’ll do the job without drama. Samsung’s cards tend to behave consistently in real-world write/lockups, which matters more than “paper” speed in day-to-day deployments.
That said, at ~£34.81 ex-VAT, it’s not the cheapest way to get storage, so I wouldn’t pick it if your use case is performance-critical or you need lots of cards at scale for very bandwidth-hungry video workflows. If you’re outfitting lots of devices and cost-per-gig is the main driver, you might find better value from the same tier of reputable brands. But if you want a card you can hand to users and not think about — and you’re buying fewer units — this is a solid choice.
Why This Product
Extreme endurance for monitoring devices
Take 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 mom...
Built to last up to 140K hours of recording
Astoundingly 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 ...
Record and play in FHD/4K
The 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 clarit...
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 , ...
World's No.1 Flash Memory
Experience 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 D...
Specifications
Memory
Capacity128 GB
Flash card typeMicroSDXC
Read speed100 MB/s
Write speed40 MB/s
Internal memory typeUHS-I
Features
Product colourWhite
Mean time between failures (MTBF)10000 h
Endurance10000 cycles per logical sector
CertificationCE(UKCA)/FCC/VCCI/RCM
Power
Memory voltage2.7,3.6 V
Operational conditions
Operating temperature (T-T)-25 - 85 °C
Storage temperature (T-T)-40 - 85 °C
Weight & dimensions
Width15 mm
Depth1 mm
Height11 mm
Weight0.25 g
Packaging data
Quantity per pack1 pc(s)
Packaging content
Memory adapter includedSD
Logistics data
Harmonized System (HS) code85235190
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