SanDisk microSD Memory Card, U3 for 4K

Two SanDisk Extreme microSD cards, 256GB and 128GB, standing upright on a wooden surface

SanDisk microSD Memory Card, U3 A2, for 4K Video

US $20.54 on AliExpress

Sold: 1,966Rating: 98% positive

Price checked Sep 18, 2026. It can change on AliExpress.

Sold and shipped by a seller on AliExpress, not by HiiGuy. How this works

This is a SanDisk microSD card listed with U3 and 4K marks and offered in several capacities. The seller lists it for driving recorders and surveillance cameras, which are the two jobs that fill a card fastest.

Why it made our list

Rated 98% positive by AliExpress buyers.
Over 1,900 recent orders on AliExpress.
A U3 mark is the speed class most 4K recording modes ask for.

What the seller lists

Listed with U3 and 4K Full HD marks.
The seller lists capacities from 32GB to 256GB.
Listed for driving recorders and surveillance cameras.
The photo on the listing shows cards from the SanDisk Extreme line.

Good for

Good for a dash cam, a home security camera or an action camera that records long clips. The seller lists the capacity options and speed marks, so pick the option that matches the recorder you are feeding.

Before you buy

Sold and shipped by an AliExpress seller, not by HiiGuy.
The current price and delivery time are shown on AliExpress.
The seller's own title names both the Ultra and the Extreme lines while the photo shows Extreme cards, so confirm with the seller which card the option you pick actually ships.