Introduction
Surveillance cameras and dashcams record continuously, storing hours of video in Full HD, 4K or even 8K . Unlike smartphones or game consoles, these devices require a Micro SD card capable of withstanding thousands of writes and erases without performance loss .
Using a regular Micro SD card for a surveillance system or dashcam can lead to premature failure , corrupted videos , or recording errors . Therefore, it is essential to choose a fast, robust SD card designed for intensive use .
In this article, we'll explain how to choose the best Micro SD card for a surveillance camera or dashcam, and why the Xiaomi PRO Plus Micro SD Card is an excellent choice to ensure smooth and secure capture .
Why is a specific Micro SD card essential for a surveillance camera?
Unlike Micro SD cards used for photos or games, those dedicated to surveillance cameras and dashcams must withstand constant write cycles 24/7 without slowing down, extreme temperatures in a car exposed to the sun or cold, loop recordings where old files are automatically replaced, as well as resistance to shock and vibration, which is essential for a dashcam installed in a vehicle.
A conventional Micro SD card is not designed to withstand these constraints and risks deteriorating quickly.
Criteria for choosing a Micro SD card for a surveillance camera or dashcam
Speed class: a key element for smooth recording
A dashcam or surveillance camera must record continuously without interruption. A card that is too slow can cause dropped frames, stuttering, or sudden recording stops.
U1 / Class 10 cards (10 MB/s minimum) may be sufficient for Full HD (1080p) video, but may be limited for intensive use. U3 / V30 cards (30 MB/s minimum) are recommended for dashcams shooting in 4K and for security cameras with motion detection. V60 / V90 cards (60 to 90 MB/s minimum) are ideal for high-end dashcams and professional 8K cameras.
If you are using a 4K or Full HD camera with loop recording, you should use at least a U3/V30 card.
Storage capacity: how many GB are needed?
The available space on your Micro SD card determines how long your camera can record before erasing old files.
Cards from 32GB to 64GB store a few hours of 1080p video, enough for casual use. Cards from 128GB to 256GB are ideal for a Full HD or 4K dashcam or security camera with several days of recording. Cards from 512GB to 1TB are recommended for continuous recordings over several weeks. 2TB cards are ideal for professionals or high-capacity security cameras.
If you use a dashcam or 24/7 security camera, choose a card with at least 256GB to avoid erasing videos too quickly.
Resistance and durability: essential criteria
Surveillance cameras and dashcams operate in harsh conditions. A suitable Micro SD card must be resistant to extreme temperatures, humidity, and splashes, as well as vibration and shock—an essential criterion for a dashcam installed in a car.
The Xiaomi PRO Plus Micro SD Card is designed to withstand extreme conditions, ensuring optimal reliability in all circumstances.
Why choose the Xiaomi PRO Plus Micro SD Card for a surveillance camera or dashcam?
If you are looking for a reliable and high-performance Micro SD card for a surveillance camera or dashcam, the Xiaomi PRO Plus Micro SD Card is one of the best options in 2025.
With a capacity of up to 2TB, it can store hundreds of hours of recording without running out of space. Its ultra-fast read speed (160 MB/s) and write speed (120 MB/s) guarantees smooth capture without stuttering or dropped frames. U3 / V30 certified, it is perfect for continuous 4K recording and high-definition video surveillance. It offers resistance to extreme conditions and works even in high temperatures, humidity or in the presence of vibrations.
Thanks to its optimized loop recording, it is compatible with dashcams, security cameras and on-board cameras.
Conclusion: Which Micro SD card should you choose for a surveillance camera or dashcam?
To ensure smooth, uninterrupted recording, it's essential to choose a durable, high-performance Micro SD card. A minimum U3/V30 card is recommended for 4K video, while professional cameras require a V60 or V90 card. A capacity of 256GB to 2TB allows you to record several days of continuous video without running out of space.
The Xiaomi PRO Plus Micro SD Card is an excellent option for a dashcam or surveillance camera, thanks to its large capacity, speed and resistance to extreme conditions.
Discover the Xiaomi PRO Plus Micro SD Card now on Retroxmania and enjoy reliable storage for your recordings!