Samsung 128GB PRO microSDXC Memory Card – UHS-I U3 A2 V30 160MB/s with Adapter

160/120 MB/s

4K Video · Burst Shots · Fast Transfer

160MB/s sequential read transfers a full 128GB of footage to a laptop in around 13 minutes. 120MB/s write sustains 4K UHD video recording and handles high-speed JPEG burst sequences without camera buffer stalls. V30 (Video Speed Class 30) guarantees a minimum sustained write of 30MB/s — the SD Association’s threshold for reliable 4K UHD video capture. U3 confirms the same minimum for UHS-rated devices. Both are guaranteed minimum specifications rather than peak figures, ensuring consistent performance across the full capacity. For smartphones, action cameras and drones requiring a fast, reliable microSD card at 128GB, the PRO Plus delivers Samsung quality at a practical price point.

A2 Performance

4,000 IOPS — Smooth App Loading

A2 (Application Performance Class 2) requires 4,000 random read IOPS and 2,000 random write IOPS — the random I/O performance that determines how fast apps launch and run when stored on expandable storage. For Android users installing apps, games and media to a microSD card, A2 means normal-speed performance rather than the sluggishness of lower-rated cards. For Nintendo Switch users expanding game storage, A2 ensures load times that are competitive with internal storage. The PRO Plus meets this specification, making it suitable for both media storage and active app use on any compatible device.

6-Proof · 10-Year Warranty

Samsung NAND — Built to Last

Six verified protection layers: waterproof (72 hours in seawater), temperature-proof (-25°C to 85°C), X-ray proof (up to 100mGy), magnet-proof (15,000 gauss), drop-proof (5 metres) and wearout-proof (10,000 insertions). Samsung manufactures all NAND flash and controller firmware in-house — the same production line that supplies Samsung Galaxy internal storage. The 10-year limited warranty is direct from Samsung and covers the card under normal use for a decade. Note: the warranty does not extend to dash cam, CCTV or surveillance camera applications. For those use cases, Samsung’s PRO Endurance card is the correct choice. The SD adapter carries a 1-year warranty.

Great choice if you…

✔ Record 4K video on a smartphone, action camera or drone
✔ Shoot high-resolution photo bursts and need fast write speed
✔ Store and run apps on microSD (A2 performance required)
✔ Want a 10-year warranted card backed by Samsung
✔ Use GoPro, DJI drone, Nintendo Switch or Samsung Galaxy

Consider something else if…

✖ You need 180MB/s+ speeds — see Samsung PRO Plus 256GB (newer spec)
✖ You need extended endurance for dash cams — see Samsung PRO Endurance
✖ You need 256GB or 512GB — see larger capacities in the PRO Plus range

Technical Specifications

Condition

Brand New — Retail Packaging

Warranty

10 Years Samsung

Delivery

4–5 Working Days · Fully Tracked