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microSD Cards

microSDXC/SDHC UHS-I U3M (Ultimate)

Transcend's microSDXC/SDHC UHS-I U3M memory cards provide the performance and capacity necessary to harness the full power of your UHS-I compliant smartphones, tablets, digital cameras, and camcorders. Capable of incredible read and write speeds of up to 95MB/s and 60MB/s respectively, these cards can easily capture ultra-high quality 4K and 3D recordings, and significantly shorten transfer time between devices. Additionally, the top-tier MLC NAND flash chips inside are durable and reliable.


Unparalleled transfer speeds

Transcend's UHS-I U3M microSD memory cards meet both the UHS Speed Class 3 (U3) and the UHS Video Speed Class 30 (V30) standards for 4K Ultra HD video recordings. With read and write speeds of up to 95MB/s and 60MB/s respectively, Transcend's UHS-I U3M microSD memory cards offer the rates that allow you to capture smooth 4K, 3D, and Full HD videos with ease.

MLC NAND flash chips

Transcend's UHS-I U3M microSD memory cards are manufactured with top-tier MLC NAND flash chips, providing endurance and reliability that is ideal for action cameras. Additionally, the built-in Error Correcting Code (ECC) can detect and correct transfer errors.

Great compatibility

With storage capacity up to 128GB, Transcend's UHS-I U3M microSD memory cards work perfectly with dashcams, smartphones, tablets, digital cameras, recorders and drone cameras. Feel free to store your high-resolution videos and photos.

Extreme protection

To deliver the best performance and stability, Transcend's microSD memory cards are tested to withstand extreme conditions.

  • Waterproof: meet JIS IPX7 standards that can withstand immersion in 1 meter of water for up to 30 minutes.
  • Temperature proof: perform in temperature extremes from -25°C to 85°C.
  • Static proof: meet EMC IEC61000-4-2 standards and withstand static electricity.
  • X-ray proof: meet the ISO7816-1 standard and are immune to airport X-rays.
  • Shock proof: provide excellent shock, vibration, bending and twisting resistance.

Exclusive RecoveRx software

Transcend offers exclusive RecoveRx software, a free data recovery utility that allows you to search deep within a storage device for traces of erased files including digital photos, documents, music and videos.



Dimensions (Max.)11 mm x 15 mm x 1 mm (0.43" x 0.59" x 0.04")
Weight (Max.)0.4 g (0.01 oz)


  • 16 GB
  • 32 GB
  • 64 GB
  • 128 GB

Operating Environment

Operating Temperature-25°C (-13°F) ~ 85°C (185°F)
Operating Voltage
  • 2.7V ~ 3.6V


Speed Class
  • UHS-I U3
  • V30
Read Speed (Max.)95 MB/s
Write Speed (Max.)60 MB/s
Insertion/Removal Cycles10,000
  • Speed may vary due to host hardware, software, usage, and storage capacity.


  • CE
  • FCC
  • BSMI
  • RCM
  • Limited Lifetime Warranty
Warranty Policy
  • Please click here for more information about the Transcend Warranty Policy.


Supported Device
  • Camcorders
  • Smartphones
  • Tablets
  • Digital cameras

Order Information

  • TS128GUSDU3M