KOOTION 64GB UHS-I microSDXC Card with Adapter

KOOTION 64GB UHS-I microSDXC Card with Adapter is a compact storage card advertised with C10, U3, A1, and V30 ratings. Its stated 85MB/s read speed and included SD adapter suit compatible phones, tablets, and cameras, while the listing's transfer-speed and usable-capacity notes matter for buyers planning 4K recording or file transfers.

At a glance

The listing advertises U3, V30, and Class 10 for 4K and Full HD video recording.
A1-rated performance is claimed for app loading and game use, with stated 1500 IOPS read and 500 IOPS write.
The product description says an SD adapter is included for broader device compatibility.
The stated maximum read speed is 85MB/s, with actual transfer speeds dependent on hardware and software.

Price

$14.39Save 10%

Reference price: ~~$15.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

The SD adapter expands use with devices that accept standard-size SD cards, according to the listing.
Its 64 GB capacity and stated smartphone, tablet, and camera compatibility cover several common storage uses.
The listing supplies both read-speed and media-speed figures rather than only a general high-speed claim.

Technical specifications

14 specifications

Identity
Brand	KOOTION
Model	KOOTION 64GB microSDXC UHS-I U3 V30

Storage and compatibility
Card type	Micro SDXC
Storage listed	64 GB
Compatible devices	Smartphone, Tablet, Camera
Connectivity	microSDXC
Format listed	exFAT

Speed and ratings
Read speed listed	85 megabytes_per_second
Media speed listed	62.5 megabytes_per_second
Speed class	Class 10
Video speed class	V30

Physical details
Weight listed	0.2 g
Color	White, Orange

Listed features
Additional features	Drop Proof, Magnetic Proof, Water Proof, X Ray Proof

What to know before buying

Listing details to confirm

The listing says the card is exFAT formatted and that usable space is less than the advertised capacity. It gives approximate usable capacity as 93% in one note but also describes capacity differences without that figure elsewhere. The 85MB/s read claim is qualified as an internal-test maximum and the page separately lists 62.5 megabytes_per_second as media speed. Confirm the expected device compatibility and performance for your specific recording or transfer workload.

Who is it for?

A good fit for

People needing a 64 GB card for a compatible smartphone, tablet, or camera.
Users seeking a microSDXC card advertised for 4K recording with U3 and V30 ratings.
Buyers who can use the included SD adapter with a compatible SD slot.

Less suited to

Buyers who need a guaranteed transfer speed or independently verified recording performance.
People who require the full labeled capacity to be available for files.

KOOTION 64GB UHS-I microSDXC Card with Adapter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 3,729 ratings

5 stars76%76%
4 stars11%11%
3 stars4%4%
2 stars2%2%
1 star7%7%

Aggregate ratings lean positive, with most ratings in the five-star category, while a smaller share are one-star. This broad distribution suggests generally favorable reception alongside some substantial dissatisfaction, but it does not identify causes or establish speed, capacity, or recording performance. For buyers choosing this card for video or app use, the listed ratings should not replace checking device compatibility and the stated speed conditions.

Frequently asked questions

Does this card include an SD adapter?

The product title and feature text claim an SD adapter is included. The supplied package inventory is empty, so confirm the selected listing's included components if the adapter is essential.

What speeds does the listing claim?

It lists read speed as 85 megabytes_per_second and media speed as 62.5 megabytes_per_second. The description calls 85MB/s an internal-test maximum and says actual transfer speeds vary with hardware and software.

Is the card suitable for 4K recording?

The listing advertises U3, V30, and Class 10 for 4K and Full HD recording. That is a product claim, not a guarantee of performance in every camera or recording mode.

How much storage can I use?

The listing says usable capacity is below the stated 64 GB because of capacity-calculation differences and system files. It gives an approximate 93% figure in one note, which can vary with formatting and device.