Can I just use any microSD card in a security camera or video doorbell?

You can, but a standard consumer card not rated for continuous recording tends to wear out and start dropping or corrupting footage much sooner than an endurance-rated card, since a camera constantly overwrites old footage in a loop rather than writing files occasionally the way a phone does.

What capacity microSD card do I actually need?

It depends on resolution and how much footage your camera keeps before overwriting old clips, but 128GB to 256GB is a reasonable range for most single-camera setups recording a rolling few days to a couple of weeks of motion-triggered clips. Check your specific camera's documentation, since some brands cap the maximum supported card size.

Do endurance-rated cards actually last longer than regular cards?

Yes — endurance-rated cards are built and tested for sustained, continuous write cycles, which is the exact workload a security camera creates, while standard cards are tested more around occasional, bursty writes like photos. That said, no microSD card lasts forever under continuous use, so plan on replacing even an endurance card every couple of years in a heavily-used camera.

Does my camera brand limit which microSD cards will work?

Some do — Wyze, Eufy, and other brands publish a maximum supported capacity and sometimes a specific list of tested cards in their app or support pages. Check that before buying a larger or unusual card, since exceeding the supported capacity can mean the camera won't format or recognize it at all.

Best microSD Cards for Security Cameras and Video Doorbells

A handful of cameras and doorbells in our other roundups — including the Wyze Cam v4, Reolink Video Doorbell WiFi, Wyze Video Doorbell Pro, and TP-Link Tapo C225 — record locally to a microSD card instead of, or alongside, a paid cloud plan. That only works well if the card itself can handle the job: a camera constantly overwriting old footage in a loop puts far more wear on a card than a phone taking occasional photos ever does.

Regular consumer microSD cards, even ones marketed as high-speed for photography, aren't built for that kind of continuous read/write cycle and tend to fail or corrupt footage well before an endurance-rated card would. This roundup focuses on cards built specifically for that workload, plus a couple of general-purpose fast cards that still make sense if your camera's video bitrate is the bigger concern than 24/7 durability.

New to this category? Start with our home security camera & video doorbell buying guide before diving into the picks below.

How we picked: We prioritized microSD cards explicitly rated for continuous, 24/7 write cycles — the actual workload a security camera or doorbell creates — over cards that only advertise a high speed rating with no endurance spec. We also noted capacity ranges and the brand-specific compatibility checks worth doing before buying.

At a glance

#PickWhy it stands outPrice

SanDisk High Endurance microSDXC CardTop Pick24/7 continuous recording - Built specifically for continuous read/write cycles in dash cams and security cameras, not just occasional photo storageCheck Amazon

Samsung PRO Endurance microSDXC CardRunner-upendurance rating for heavy continuous use - Marketed specifically for dash cams and security cameras recording around the clockCheck Amazon

SanDisk Extreme PRO microSDXC CardBest Valuehigh-bitrate 4K camera footage - Among the fastest microSD cards available, which matters for cameras recording high-resolution 4K videoCheck Amazon

WD Purple microSD Surveillance CardAlso greatpurpose-built surveillance rating - Designed specifically for surveillance camera workloads with sustained write performanceCheck Amazon

Kingston Endurance microSDXC CardAlso greatbudget endurance pick - Rated specifically for continuous-recording use in dash cams and security camerasCheck Amazon

The picks in detail

SanDisk High Endurance microSDXC Card

Top Pick

9.6/10Editor’s score

Best for 24/7 continuous recording

Built specifically for continuous read/write cycles in dash cams and security cameras, not just occasional photo storage
Rated for a specific number of write hours at each capacity, rather than a vague lifespan claim
Capacities up to 256GB for a longer local recording window before old footage gets overwritten

Watch out Sequential write speeds trail SanDisk's own Extreme PRO line, so it's not the best fit for a camera recording high-bitrate 4K footage nonstop.

Check price on Amazon

Samsung PRO Endurance microSDXC Card

Runner-up

9.3/10Editor’s score

Best endurance rating for heavy continuous use

Marketed specifically for dash cams and security cameras recording around the clock
Samsung publishes a specific total-recording-hours rating, which makes comparing endurance across cards straightforward
Backed by a warranty that's tied to the card's rated endurance period, not just a flat number of years

Watch out Top-end capacities are smaller than SanDisk's High Endurance line, so very long local-storage windows may mean swapping cards more often.

Check price on Amazon

SanDisk Extreme PRO microSDXC Card

Best Value

9.0/10Editor’s score

Best for high-bitrate 4K camera footage

Among the fastest microSD cards available, which matters for cameras recording high-resolution 4K video
A2 app performance rating keeps random read/write speeds consistent, not just peak sequential speed
Widely stocked and broadly compatible with the vast majority of camera and doorbell brands

Watch out Not endurance-rated for continuous 24/7 recording the way SanDisk's own High Endurance card is, so it fits cameras that record in short clips better than ones that record nonstop.

Check price on Amazon

WD Purple microSD Surveillance Card

Also great

8.7/10Editor’s score

Best purpose-built surveillance rating

Designed specifically for surveillance camera workloads with sustained write performance
Built to handle the continuous overwrite cycles that wear out standard consumer cards faster
Carries over Western Digital's surveillance-storage reputation from its Purple hard drive line

Watch out Less commonly stocked at mainstream retailers than SanDisk or Samsung, and typically costs more per gigabyte.

Check price on Amazon

Kingston Endurance microSDXC Card

Also great

8.4/10Editor’s score

Best budget endurance pick

Rated specifically for continuous-recording use in dash cams and security cameras
Usually priced lower than SanDisk's or Samsung's endurance lines at the same capacity
Wide operating temperature range, which helps for cameras mounted outdoors in an uninsulated spot

Watch out Smaller footprint in the security camera space, with fewer camera manufacturers explicitly listing it as tested and compatible.

Check price on Amazon

Frequently Asked Questions

Can I just use any microSD card in a security camera or video doorbell?: You can, but a standard consumer card not rated for continuous recording tends to wear out and start dropping or corrupting footage much sooner than an endurance-rated card, since a camera constantly overwrites old footage in a loop rather than writing files occasionally the way a phone does.
What capacity microSD card do I actually need?: It depends on resolution and how much footage your camera keeps before overwriting old clips, but 128GB to 256GB is a reasonable range for most single-camera setups recording a rolling few days to a couple of weeks of motion-triggered clips. Check your specific camera's documentation, since some brands cap the maximum supported card size.
Do endurance-rated cards actually last longer than regular cards?: Yes — endurance-rated cards are built and tested for sustained, continuous write cycles, which is the exact workload a security camera creates, while standard cards are tested more around occasional, bursty writes like photos. That said, no microSD card lasts forever under continuous use, so plan on replacing even an endurance card every couple of years in a heavily-used camera.
Does my camera brand limit which microSD cards will work?: Some do — Wyze, Eufy, and other brands publish a maximum supported capacity and sometimes a specific list of tested cards in their app or support pages. Check that before buying a larger or unusual card, since exceeding the supported capacity can mean the camera won't format or recognize it at all.

Keep reading

Security Cameras Buying Advice

Guide

At a glance

The picks in detail

SanDisk High Endurance microSDXC Card

Samsung PRO Endurance microSDXC Card

SanDisk Extreme PRO microSDXC Card

WD Purple microSD Surveillance Card

Kingston Endurance microSDXC Card

Frequently Asked Questions

Keep reading

Security Cameras Buying Advice

Home Security Camera & Video Doorbell Buying Guide