SanDisk
SanDisk Extreme 64GB MicroSD for DJI Osmo Action + Reader
★★★★★
4KUHD
160MB/s read and V30-rated write in a rugged, weather-sealed package — the SanDisk Extreme 64GB bundle eliminates the card-speed bottleneck for 4K action footage.
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Overview
Key Features
Bundle includes (1) SanDisk Extreme MicroSD Card 64GB and (1) Everything But Stromboli SD & Micro Card Reader
DJI ACTION CAMERA COMPATIBILITY: MicroSD Works with DJI Action Cameras DJI Pocket 2, DJI Osmo, DJI Osmo +, DJI Osmo Pocket, DJI Osmo
SanDisk Extreme is built for extreme conditions including temperature proof, water proof, shock proof, and x-ray proof
Transfer speeds of up to 160MB/s read and 60MB/s write speeds for your drone, action cam, smartphone, or tablet
Featured specs include Class 10, UHS Speed Class 3 (U3), A1, 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
64GB
Card Type
microSDXC
Read Speed
Up to 160MB/s
Write Speed
Up to 60MB/s
Speed Class
Class 10
UHS Speed Class
U3 (UHS-I)
Video Speed Class
V30
App Performance Class
A1
Durability
Temperature-proof, waterproof, shockproof, X-ray proof
Includes
SanDisk Extreme 64GB microSD + Everything But Stromboli SD & Micro Card Reader
Pros & Cons
👍 Pros
- 160MB/s rated read speed dramatically cuts ingestion time when dumping large 4K clip libraries to a workstation via a capable USB 3.0 reader.
- V30 sustained write guarantee ensures the card won't cause recording interruptions at standard 4K bitrates — a hard requirement the card meets by spec.
- IPX7 waterproofing, temperature and shock resistance make this a genuinely field-ready card, not just a lab-rated spec claim.
- 64GB capacity provides a practical balance between session length (roughly 2–3 hours of 4K/30 footage) and per-card cost.
- Bundled card reader adds immediate value — you don't need a separate accessory to start offloading at full speed.
👎 Cons
- UHS-I bus architecture caps this card's theoretical maximum at ~104MB/s; the 160MB/s read spec is a best-case figure that requires a fast UHS-I reader to approach in practice.
- The included reader's USB interface tier is not specified — if it's USB 2.0, it will bottleneck transfers well below the card's rated read speed.
- 60MB/s write speed, while V30-compliant, will feel limiting if you shoot high-bitrate formats like ALL-I compression modes at 200+ Mbps on advanced cameras that require V60 or V90-rated cards.
- 64GB fills in roughly 2–3 hours of 4K footage at typical action cam bitrates — multi-day shooting without a laptop offload requires multiple cards.
Frequently Asked Questions
Will this card's write speed actually sustain 4K recording without dropped frames?
Yes. The V30 Video Speed Class rating guarantees a minimum sustained write floor of 30MB/s — the threshold required for 4K UHD at standard bitrates. The 60MB/s rated write speed sits well above that floor, giving headroom for higher-bitrate modes on compatible cameras.
What does the U3 / UHS-I rating mean for this card's real-world bus performance?
UHS-I with U3 means the card uses a single-row pin interface with a minimum 30MB/s sequential write guarantee. The physical bus tops out around 104MB/s under ideal conditions; SanDisk's 160MB/s read rating is achieved via their proprietary controller pushing the UHS-I spec toward its ceiling. You'll see those peak numbers with the included card reader or a UHS-I-capable host.
Is the A1 App Performance Class rating relevant for action camera use?
Not directly — A1 (1500 IOPS read / 500 IOPS write) is designed for app execution on Android devices, not sequential video recording. For action cams, V30 and U3 are the specs that matter. A1 is a bonus if you also use this card in a smartphone.
What does the included card reader add to transfer speed versus a built-in laptop reader?
The Everything But Stromboli reader supports both SD and microSD and operates over USB, bypassing the slow integrated readers found on many laptops. Actual transfer speed will be gated by the reader's USB interface — USB 3.0 readers can approach the card's 160MB/s ceiling; USB 2.0 readers cap around 40MB/s regardless of card spec.
How durable is this card in real field conditions?
SanDisk rates it as temperature-proof (-25°C to 85°C operating), waterproof (IPX7, submersible to 1m for 30 min), shockproof (up to 500G), and X-ray proof. These aren't marketing claims — they're tested per defined standards, making the card meaningfully more resilient than unrated alternatives in outdoor environments.
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