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Small red and grey microSDHC card, 32 GB, U1 80 MB/s read

SanDisk

SanDisk Ultra microSDHC 32GB U1 80MB/s

SKU CH-7S4K-7MQWC

A 32 GB microSDHC card with U1 speed class and 80 MB/s read performance for fast file transfers

  • Card typeMicroSD
  • TypemicroSDHC
  • Capacity32GB
  • Speed Class RatingU1
  • Read Speed80 megabytes_per_second
  • Write Speed80
  • 80 MB/s read speed for quick file access
  • 80 MB/s write speed for smooth recording
  • U1 rating guarantees minimum 10 MB/s sustained write
  • 32 GB capacity stores thousands of photos
  • Class 10 performance meets Full HD video demands

Capacity and class

This 32 GB microSDHC card carries a U1 and Class 10 rating, making it suitable for devices that require a minimum sustained write speed of 10 MB/s. It targets users who need reliable storage for Full HD video recording or everyday file transfers in smartphones, tablets, or action cameras.

Sustained write behaviour

The U1 designation guarantees a minimum sequential write speed of 10 MB/s across the whole capacity, not just in short bursts. Rated read and write speeds reach 80 MB/s, so extended recordings or large batch copies maintain consistent throughput without dropping below the class floor.

Upgrade path

This card replaces slower Class 4 or Class 6 media that cannot sustain 10 MB/s writes, eliminating frame drops in Full HD capture. The jump is worth it when your device specifies UHS-I U1 or Class 10 as a minimum requirement for video modes or app performance.

Highlights

  • 80 MB/s read speed for quick file access
  • 80 MB/s write speed for smooth recording
  • U1 rating guarantees minimum 10 MB/s sustained write
  • 32 GB capacity stores thousands of photos
  • Class 10 performance meets Full HD video demands

Specifications

BrandSanDisk
Card typeMicroSD
SeriesUltra
ModelSDSQUNR-032G-GN3MN
Part NumberSDSQUNS-032G-GN3MN
TypemicroSDHC
Capacity32GB
Speed Class RatingU1
Read Speed80 megabytes_per_second
Write Speed80
OptionNo Adapter

Questions about this item

Does the 80 MB/s read speed generate noticeable heat or extra power draw when recording video all day?

The card draws only the standard microSDHC bus power and runs cool enough for continuous full-day recording in phones, drones or action cameras.

What host device slot and file system do I need so the 32 GB capacity is recognised?

Any microSDHC or microSDXC slot with UHS-I support will see the full 32 GB; the card ships pre-formatted FAT32.

Will this U1 card slow down an older camera that only supports Class 10?

The card is rated Class 10 and U1, so it meets the minimum sustained write speed older Class 10 cameras expect without bottlenecking them.

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