Best Memory Cards for DJI Osmo Action 4 (2026)

The DJI Osmo Action 4 shoots 4K at up to 120fps with a max bitrate of 130 Mbps — about 16.25 MB/s in actual write demand. Any V30 or U3 microSD card covers that comfortably; the V30 speed class guarantees a minimum sequential write speed of 30 MB/s. In practice, I haven’t found a modern card from a reputable brand that causes problems on this camera, but older and no-name cards do trigger the low-speed warning or cause recording to stop mid-clip. The cards below work cleanly.

Recommended MicroSD Cards For DJI Osmo Action 4

The Action 4’s 130 Mbps max bitrate works out to 16.25 MB/s — any UHS-I microSD rated V30 or U3 handles that with room to spare. Here are the ones I’ve tested.

Quick Picks

Best overall: Lexar Silver Plus — the fastest UHS-I microSD I’ve tested at 151 MB/s write. Handles the Action 4’s 4K120 with headroom to spare.

Best value: Kingston Canvas Go! Plus — 128 MB/s write, V30/U3. Reliable, widely available, and priced right.

Budget pick: Samsung EVO Plus — 123 MB/s write, V30/A2. Meets spec at the lowest price point.

DJI Action 4 Capacity

What is the maximum memory card capacity compatible with the DJI Osmo Action 4?

The DJI Action 4 is compatible with microSD memory cards ranging from 32GB up to 512GB, which is officially supported for now, although larger cards may be possible.

To optimize your experience with the Action 4’s enhanced battery life and 130 Mbps bitrate, a card in the 128GB to 256GB range is probably the ideal choice for most users, as that data rate will be recorded to the cards at up to 16.25 MB/s.

Can You Use UHS-II cards?

Yes, you can use UHS-II cards with the camera, but they won’t enhance the performance because it has only one UHS-I memory card slot. 

If you want faster transfer speeds when offloading footage, use a UHS-II card reader on your computer — no adapter needed.

Can You Use MicroSD Express Memory Cards?

MicroSD Express memory cards will also work in the DJI Action 4. However, they will be limited to UHS-I speeds and offer no additional performance.

SD Card Related Camera Specs

Sensor Size: 10 MP 4:3 1/1.3 inch CMOS SD Card Slot: Single Slot Micro SD UHS-I Maximum SD Card Size / Memory Card Capacity: Up to 512 GB. Minimum SD Card Specs: UHS-I U3 Video Bitrate: DJI Osmo Action 4 has a bitrate of up to 130Mbps. Video Resolution: 4K UHD 23, 25, 30, 50, 60, 120 fps

What Size Card To Buy?

You can shoot at several resolutions and bitrates, but when using the best settings, you’ll likely want to start with a 128GB or 256GB card. This allows you to shoot through a few battery charges with some room to spare.

DJI Action 4 Bitrates

This chart shows the anticipated recording durations for different card sizes when shooting at the maximum bitrate of 130 Mbps.

Video Rates	Megabytes	128GB	256GB	512GB
H.265 130Mbps	16.25MB/s	131min	263min	525min

Alternatively, you can use the bitrate calculator.

Best SD Cards DJI Action 4 | Bottom Line

The Action 4 doesn’t ask much of a memory card — 130 Mbps translates to 16.25 MB/s, and V30 guarantees a minimum of 30 MB/s. Any of the cards above cover it. If I were buying one card for this camera, it’d be the Lexar Silver Plus: fastest UHS-I option I’ve tested, widely available, and reasonably priced. If budget is a factor, the Kingston Canvas Go! Plus covers everything the Action 4 needs without overpaying.

Heat and Sustained Recording

Action cameras put different stress on memory cards than regular cameras. They run hot, often mounted in waterproof housings with no airflow, writing continuously for extended sessions. A card that performs fine in a mirrorless may throttle under sustained heat in an action camera. This is why sticking to established brands matters here more than it does for intermittent burst shooting — generic and no-name cards are more likely to drop speed under heat, which on the Action 4 means the recording stops mid-clip.

Recording at 4K/120fps generates significantly more heat than 4K/30fps. For long 4K/120p sessions in warm conditions — strapped to a helmet, mounted on a bike, or filming in direct sun — cards rated for sustained operation up to 70°C are worth prioritizing. The Lexar Silver Plus and SanDisk Extreme Pro are both validated for this range. Budget cards typically aren’t.

DJI Osmo Action 4 Memory Card FAQ

Does the A2 rating matter for the Action 4? V30 (or U3) is the relevant rating — it guarantees a 30MB/s minimum write speed, which covers the Action 4’s 130Mbps (16.25MB/s) maximum bitrate. A2 is a random-read performance spec designed for Android app loading — it does nothing for action camera recording. A card rated V30 without A2 records identically to one rated V30 A2 in this camera. Why stick to name brands in an action camera? Action cameras write continuously in hot, enclosed conditions — strapped to a helmet in summer sun or mounted in a waterproof housing with no airflow. Budget flash memory throttles speed under sustained heat, which on the Action 4 triggers the low-speed warning and stops recording mid-clip. A card that performs fine in a mirrorless camera used intermittently can fail under 30 minutes of continuous action-cam recording at 4K/120fps. How much storage per battery charge? The Action 4 battery lasts roughly 60–75 minutes depending on resolution and temperature. At 130Mbps maximum, that’s about 58–68GB per charge. A 128GB card covers a full battery with room to spare. For a full day with multiple batteries, 256GB prevents having to offload mid-day. Can I use a 1TB card? The Action 4 officially supports cards up to 512GB. Larger cards may work but aren’t validated by DJI. For most shooting, 256GB is the practical sweet spot — enough for a full multi-battery day at maximum bitrate.

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