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A card carries five or six markings and most buyers look only at the gigabytes. Yet the speed class decides whether a camera records 4K without dropping frames, whether a phone stutters, and how long the card survives in a dash cam. At MobileLand cards are sorted by capacity and purpose, and readers by connector.
32 GB — a phone for music and photos, older devices (some cannot read above 32 GB). 64–128 GB — dash cam, action camera, a phone with lots of photos; the best price-to-space ratio. 256–512 GB — 4K recording, drones, Nintendo Switch, a tablet for films. Check the maximum your device supports — it is in the manual.
A USB-A or USB-C reader copies footage from a camera to a computer faster than a cable and does not drain the camera battery. USB-C readers also work with phones (OTG) and iPads. For old laptops without an SD slot a reader is the only way.
Cards are genuine with the manufacturer's warranty; 24–48 h delivery across Montenegro, cash on delivery.