SanDisk Extreme microSD Card 128GB
- Memory Storage Capacity: 128 GB
- Flash Memory Video Speed Class: V30
- Flash Memory Type: Micro SD
- Hardware Connectivity: microSDXC
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A dependable 128GB microSD for 4K recording on phones, drones, or action cameras, with write speed (90MB/s) mattering more day to day than the 190MB/s read peak.
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ASIN: B0B2DD66GSCategory: MicroSD Cards
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Overview
A dependable 128GB microSD for 4K recording on phones, drones, or action cameras, with write speed (90MB/s) mattering more day to day than the 190MB/s read peak.
The 190MB/s read figure is the headline number, reached with SanDisk's own Pro-Reader accessory rather than a standard card slot, so day-to-day transfer speeds through a phone or laptop's built-in reader will run slower. Write speed on this specific 128GB card is listed at 90MB/s, which is what actually governs sustained 4K recording rather than the read number. The A2 rating is aimed at running apps directly from the card on Android phones, on top of its use as camera or drone storage.
- Up to 190MB/s read, 90MB/s write
- UHS Speed Class 3 and Video Speed Class 30
- A2 rated for Android app performance
- Shockproof, waterproof, temperature-proof, X-ray-proof
Who it's for
Android phone owners, drone pilots, and action camera users who need a card rated for continuous 4K recording and want the added durability of a shockproof, waterproof card for outdoor use.
Pros and cons
- V30 rating supports sustained 4K video recording
- A2 rated for running apps from the card on Android
- Shockproof, waterproof, and temperature-proof build
- 190MB/s read speed with SanDisk's Pro-Reader
- Full 190MB/s read speed needs a separate Pro-Reader, sold apart
- 90MB/s write is the number that limits actual recording, not the read figure
Performance notes
The A2 application performance class helps with random read and write operations, which matters more for running apps from the card than for video. Shockproof, waterproof, temperature-proof, and X-ray-proof construction is aimed at the card surviving outdoor use in a drone or action camera rather than sitting in a drawer.
Specifications
| Brand | SanDisk |
|---|---|
| Dimensions & fit | |
| Item Weight | 0.01 pounds |
| Item Dimensions L x W | 0 × 0.6 inches |
| Capacity & performance | |
| Memory Storage Capacity | 128 GB |
| Flash Memory Video Speed Class | V30 |
| Secure Digital Association Speed Class | Class 10 |
| Construction & materials | |
| Color | Red/Gold |
| Compatibility & installation | |
| Hardware Connectivity | microSDXC |
| Compatible Devices | Camera, Personal Computer |
| Included components | |
| Number of Packs | 1 |
| Unit Count | 1 |
| Warranty & support | |
| Warranty Type | Limited |
| Other details | |
| Flash Memory Type | Micro SD |
| Number of Items | 1 |
| Mfr Part Number | SDSQXAA-128G-GN6MN |
| Additional Features | Portable |
Closest rivals on specs
Patriot V30 A1 microSD Card 64GB- Memory Storage Capacity 128 vs 64 GB (+100%)
Patriot LX Series microSD Card 32GB- Memory Storage Capacity 128 vs 32 GB (+300%)
GIGASTONE 4K microSDXC Card 128GB- Item Weight 0.01 vs 0.04 pounds (-75%)
Frequently asked questions
Does this SanDisk Extreme microSD card reach 190MB/s in a normal phone or laptop?
The 190MB/s read figure is reached with SanDisk's separate Pro-Reader accessory; speeds through a standard card slot will be lower.
What write speed does the 128GB SanDisk Extreme microSD card have?
This listing specifies up to 90MB/s write, with a Video Speed Class 30 rating for sustained 4K recording.
Is this SanDisk Extreme microSD card durable enough for a drone or action camera?
Yes, SanDisk rates it shockproof, waterproof, temperature-proof, and X-ray-proof.