SanDisk
SanDisk 64GB_TF_Extreme_x2_R4 GoPro MicroSD Card 2-Pack
★★★★★
Dual 64GB U3/V30/A2-rated cards with a bundled reader give your GoPro a sustained 60MB/s write floor that keeps up with 4K capture without dropping frames.
$21.10*
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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
Key Features
Bundle includes (2) 64GB Micro SD SanDisk Memory cards and (1) Everything But Stromboli MicroSD Card Reader for easy viewing and transferring of your GoPro Hero 9 videos and pictures
SanDisk Memory Card for Hero 9 is also compatible with many other GoPro Cameras as well as other Action Cameras from DJI, Apeman, Kodak, Insta360, Campark, Crosstour, Vtech, Nikon, Canon and more (check manual for exact compatibility)
Temperature-proof, water-proof, shock-proof and x-ray proof - built for tough conditions so these compatible GoPro SD cards are perfect for all your high speed adventures!
MicroSD Cards for Hero 9 GoPro features transfer speeds of up to 160MB/s read and 60MB/s write speeds for your action cam, smartphone, drone or tablet
Featured specs include Class 10, UHS Speed Class 3 (U3), A2, Video 30 (V30), 4K UHD and Full HD which means your card is ready for forays into virtual reality and 360 ° video recording
Specifications
Capacity (per card)
64GB
Cards Included
2
Read Speed
Up to 160MB/s
Write Speed
Up to 60MB/s
Speed Class
Class 10 / UHS Speed Class 3 (U3)
Video Speed Class
V30
Application Performance
A2
Video Format Support
4K UHD, Full HD, 360° / VR
Bus Interface
UHS-I
Durability
Waterproof (IPX7), Temperature-proof, Shock-proof, X-ray proof
Operating Temperature
-25°C to 85°C
Bundle Includes
2× 64GB SanDisk Extreme microSD, 1× Everything But Stromboli Card Reader
Pros & Cons
👍 Pros
- 160MB/s read speed cuts post-shoot transfer times significantly compared to standard Class 10 cards — a full 64GB card moves in roughly 7 minutes with a compatible USB 3.0 reader.
- 60MB/s sustained write speed comfortably exceeds the minimum requirement for 4K UHD recording with meaningful headroom for burst shooting.
- Bundle includes two cards and a card reader — redundant storage for long shoots and immediate transfer capability out of the box.
- Temperature-proof, waterproof (IPX7), shock-proof, and X-ray proof ratings make these cards appropriate for the environments action cameras are actually used in.
- UHS-I U3 / V30 dual speed class certification provides both the sustained write floor and the video-specific guarantee that frame drops won't occur mid-recording.
👎 Cons
- UHS-I bus interface caps theoretical bandwidth at ~104MB/s despite the 160MB/s read rating — actual speed is limited by bus and reader, not card spec alone.
- 64GB capacity per card fills faster than expected shooting 4K at higher bitrates — roughly 90–120 minutes of footage per card depending on resolution and frame rate settings.
- A2 rating, while a manufacturing quality indicator, provides no practical benefit in action cameras that don't run apps from the card.
- The bundled card reader's performance ceiling is determined by USB port and cable quality — users with USB 2.0 systems will not realize the card's speed advantage during transfer.
- Two identical cards in a bundle offer redundancy but no differentiation — users who need one large card for a single extended session would be better served by a 128GB or 256GB single card.
Frequently Asked Questions
What does the V30 rating mean for 4K video recording on these cards?
V30 (Video Speed Class 30) guarantees a minimum sustained write speed of 30MB/s. For 4K video at typical GoPro Hero 9 bitrates (60–100Mbps, or roughly 7.5–12.5MB/s), V30 provides substantial headroom above the minimum threshold. The SanDisk Extreme's actual sustained write speed is rated at 60MB/s, giving even more buffer for high-bitrate or burst recording scenarios.
What is the A2 rating, and does it matter for a GoPro?
A2 is an Application Performance Class rating — it specifies minimum IOPS (random read: 4,000 IOPS, random write: 2,000 IOPS) for running apps directly from the card. In a GoPro, A2 is not functionally necessary since the camera doesn't run apps from the card; it primarily benefits Android smartphones using the microSD as adoptable storage. However, A2-rated cards are manufactured to tighter tolerances, which can contribute to more consistent sequential write performance.
How fast is the 160MB/s read speed in practical transfers?
At 160MB/s read, a full 64GB card transfers to a computer in approximately 7 minutes at peak speed — versus 30+ minutes for a Class 10 non-UHS card at ~30MB/s. Real-world speeds depend on your card reader; the included Everything But Stromboli reader will max out at USB 3.0 throughput, which is the bottleneck if your port supports it.
Are these cards compatible with cameras other than the GoPro Hero 9?
Yes — UHS-I microSD cards with standard Class 10 / U3 ratings work in any device that accepts microSD. Confirmed compatible categories include other GoPro generations, DJI action cameras and drones, Android smartphones, tablets, and cameras from Canon, Nikon, Insta360, and others. Always verify your device's maximum supported card capacity and speed class in the manual.
What durability ratings do these cards carry?
SanDisk rates the Extreme line as temperature-proof (operating range -25°C to 85°C), waterproof (IPX7, submersible to 1 meter for 30 minutes), shock-proof, and X-ray proof. For an action camera card used in outdoor, water, or travel contexts, these are the relevant certifications to look for.
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