SanDisk

SanDisk SDSQUAR-128G-GN6MN 128GB Ultra Micro SD Card

4.3 (27 reviews)

Reliable 128GB micro SD card with A1-rated app performance and read speeds up to 100MB/s for GoPro and mobile devices.

$16.59*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The SanDisk SDSQUAR-128G-GN6MN is a 128GB Ultra micro SDXC card built for users who need reliable, high-capacity removable storage. With UHS-I U1 and Class 10 speed ratings, the card delivers read speeds up to 100MB/s, making it practical for transferring large video files and photo libraries to a computer. The A1 app performance rating adds versatility, allowing Android users to store and run apps directly from the card without significant lag.

Durability is a key selling point — SanDisk has engineered this card to be shockproof, temperature-proof, waterproof, and X-ray-proof, which means it can survive the rigors of outdoor shooting and travel. The bundle includes a micro card reader for quick access to files without needing a dedicated adapter. At 128GB, the card provides enough room to store hours of Full HD video or thousands of high-resolution photos, making it a practical companion for GoPro Hero cameras, smartphones, drones, and tablets.

Key Features

Bundle includes (1) SanDisk 128GB microSD card and (1) Everything But Stromboli (TM) Micro Card Reader

Compatible with GoPro HERO (2018), GoPro Hero 6, Fusion, Hero 5, Hero 4.

Read speeds up to 100mb/s; rated A1 for faster app performance and UHS Speed Class U1 and Speed Class 10 for Full HD video recording and playback

Shockproof, temperature-proof, waterproof, and X-ray-proof

Ideal for Android-based tablets and smartphones for more expandable storage

Specifications

Brand
SanDisk
Model
SDSQUAR-128G-GN6MN
Capacity
128GB
Type
Micro SDXC
UHS Speed Class
U1
Speed Class
Class 10
Read Speed
Up to 100MB/s
App Performance
A1 Rated
Durability
Shockproof, temperature-proof, waterproof, X-ray-proof
Bundle Includes
128GB Micro SD Card, Micro Card Reader

Pros & Cons

👍 Pros

  • 128GB capacity provides ample storage for high-resolution video and photos
  • A1 app performance rating supports running apps directly from the card on Android
  • Read speeds up to 100MB/s allow fast file transfers to a computer
  • Shockproof, waterproof, temperature-proof, and X-ray-proof construction
  • Bundle includes a micro card reader for convenient file access

👎 Cons

  • UHS U1 speed class may not support the highest bitrate 4K recording modes on some devices
  • Write speeds are not specified and are typically slower than the advertised read speed
  • Class 10 minimum write speed of 10MB/s is modest compared to U3-rated alternatives
  • No full-size SD adapter is mentioned in the bundle

Frequently Asked Questions

The card offers read speeds up to 100MB/s, which is suitable for transferring photos and video files quickly to your computer.
Yes, it is a standard micro SDXC card that works with smartphones, tablets, drones, and other devices that accept micro SD cards with SDXC support.
The A1 rating means the card meets minimum random read/write performance standards, making it suitable for running apps directly from the card on Android devices.
The bundle includes a micro card reader. Check the listing details to confirm whether a full-size SD adapter is also included.
SanDisk rates it as shockproof, temperature-proof, waterproof, and X-ray-proof, so it can withstand harsh conditions during travel or outdoor use.