Updated August 2026
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Amazon Basics

Amazon Basics 128GB microSDXC Memory Card with Adapter

Best value in the lineup - it matches the mid-tier cards here on the ratings that matter for 4K and includes the full-size adapter those cards charge extra for.

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Pros

  • Matches the Gigastone and Silicon Power picks on U3 and A2 ratings
  • Full-size SD adapter included rather than sold separately
  • 4.7-star average across more than 97,000 ratings
  • Usually the cheapest per gigabyte of anything on this list

Cons

  • 100MB/s read is well below the 245MB/s class leaders
  • Amazon does not publish a sustained write figure, so high-bitrate modes are a gamble
  • Stock on the 128GB single can be patchy

Specs

  • Capacity: 128GB
  • Read speed: up to 100MB/s
  • Speed class: UHS-I, U3, A2, V30
  • Included: full-size SD adapter
  • Colour: black
Why we recommend this

We compare pricing, availability, and verified ratings across retailers, then weight results toward fit for what you searched for, not just star count.