







Monitor Display
Samsung PRO Endurance 256GB microSDXC UHS-I U3 100MB/s Video Monitoring Memory Card with Adapter (MB-MJ256KA)
About this item
- Built to last up to 140K hours of recording
- Record and play in FHD/4K
- Critical data. Safeguarded
Trade & bulk
from £115.78/unit
at 18+ units
(VAT incl.)
Request a bulk quote ›
Market reference (keepa_buybox_current): £71.00. Shown for transparency — not a “was” price. Fairfields sets its own VAT-inclusive price.
Manufacturer specification (Icecat)Price benchmarked vs AmazonVerified Amazon market presence
£115.78 (inc. VAT)
Product overview
| 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 description
Samsung MB-MJ256K, 256 GB, MicroSDXC, Class 10, UHS-I, 100 MB/s, 40 MB/s
Technical specification
Full manufacturer specification.
Memory
| 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 |
Features
| Product colour | White |
|---|---|
| Mean time between failures (MTBF) | 10000 h |
| Endurance | 10000 cycles per logical sector |
| Certification | CE(UKCA)/FCC/VCCI/RCM |
Power
| Memory voltage | 2.7,3.6 V |
|---|
Operational conditions
| Operating temperature (T-T) | -25 - 85 °C |
|---|---|
| Storage temperature (T-T) | -40 - 85 °C |
Weight & dimensions
| Width | 15 mm |
|---|---|
| Depth | 1 mm |
| Height | 11 mm |
| Weight | 0.25 g |
Packaging data
| Quantity per pack | 1 pc(s) |
|---|
Packaging content
| Memory adapter included | SD |
|---|
Logistics data
| Harmonized System (HS) code | 85235190 |
|---|
Other features
| 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 |
Specs: IcecatStructured product data provided by Icecat (open catalogue).
Samsung MB-MJ256K, 256 GB, MicroSDXC, Class 10, UHS-I, 100 MB/s, 40 MB/s




