SanDisk 128GB Extreme microSD UHS I Card for 4K Video on Smartphones
- MicroSD Card
- 128 GB
- Micro SD
- Limited
- Better rated than 89%
- More reviewed than 63%
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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How it ranks among the 19 microsd cards we track
4.8★ across 15,300 Amazon ratings, Bayesian-smoothed toward the category average.
15,300 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
2,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 19 microsd cards we track - how the scorecard works · full microsd cards data report. Confidence: high - strong rating volume and complete data.Updated 8 days ago. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 128GB SanDisk Extreme microSDXC card rated for up to 190MB/s read and 90MB/s write, built for 4K video recording on smartphones, action cameras, and drones with UHS Speed Class 3 and Video Speed Class 30 ratings.
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.
Strengths and trade-offs
Drawn from this product's published specifications.
- 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
UHS Speed Class 3 and Video Speed Class 30 ratings mean the card guarantees a minimum sustained write of 30MB/s, the floor that keeps 4K recording from dropping frames even though its rated peak write is 90MB/s. 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 | 0.2 ounces |
| Item Dimensions L x W | 0 × 0.6 inches |
| Capacity & performance | |
| Memory Storage Capacity | 128 GB |
| Media Speed | 90 MB per second |
| Read Speed | 190 megabytes_per_second |
| Secure Digital Association Speed Class | Class 10 |
| Flash Memory Video Speed Class | V30 |
| Construction & materials | |
| Color | Red/Gold |
| Compatibility & installation | |
| Compatible Devices | Camera, Personal Computer |
| Hardware Connectivity | microSDXC |
| Included components | |
| Unit Count | 1 |
| Number of Packs | 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 |
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How it compares
This product against the closest alternatives we track in microsd cards.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| SanDisk 128GB Extreme microSD UHS I Card for 4K Video on SmartphonesThis product | 4.8 / 5 | 15,300 | 4.8 / 5 |
| Made for Amazon SanDisk 128GB microSD Memory Card for Fire Tablets and Fire -TVSandisk | 4.6 / 5 | 95,400 | 4.8 / 5 |
| Patriot 64GB Micro SD V30 A1 Memory CardPatriot Memory | 4.5 / 5 | 12,900 | 4.7 / 5 |
| Samsung PRO Endurance 128GB microSDXC Memory Card with AdapterSamsung | 4.7 / 5 | 9,600 | 4.7 / 5 |
| Amazon Basics microSDXC Memory Card with Full Size AdapterAmazon Basics | 4.7 / 5 | 97,500 | 4.6 / 5 |
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Questions about the SanDisk microsd cards
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
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.