SANDISK Extreme 128GB microSDXC UHS-I Card

The SANDISK Extreme microSD UHS-I Card is a 128 GB card listed for action cams, handheld gaming consoles, laptops, smartphones and tablets. Its stated 245MB/s read speed and V30 rating suit buyers recording or moving large files, but the peak read claim requires a compatible device and the listing gives conflicting write-speed figures for this capacity.

At a glance

The listing identifies this as a 128 GB microSDXC UHS-I card with Class 10 and V30 ratings.
The product details list a read speed of 245 megabytes_per_second. Manufacturer information says this peak depends on a compatible device and may be lower in use.
Manufacturer information specifies up to 120MB/s write speed for the 128GB capacity, although another product detail lists 170MB/s.

Price

$61.99Save 15%

Reference price: ~~$72.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

V30 and U3 are presented for real-time video recording with UHS-enabled host devices.
The listed device compatibility spans action cams, handheld gaming consoles, laptops, smartphones and tablets.
Manufacturer claims include water, temperature, magnetic and X-ray protection, with limitations applying to the card only.

Technical specifications

14 specifications

Identity
Brand	SANDISK
Model	SANDISK Extreme® microSD™ UHS-I Card
Card type	Micro SDXC
Connectivity	microSDXC

Storage and performance
Storage	128 GB
Read speed	245 megabytes_per_second
Media speed	170MB/s
Speed class	Class 10
Video speed class	V30

Compatibility and features
Compatible devices	Action Cams, Handheld Gaming Console, Laptop, Smartphone, Tablet
Additional features	Dust Proof, Magnetic Proof, Temperature Proof, Water Proof, X Ray Proof

Dimensions and installation
Dimensions and weight listed	1.5 x 1.09 x 0.25 cm; 27.22 g
Weight listed	27 g

Warranty
Warranty type	Lifetime Limited

What to know before buying

Listing details to confirm

The listing is inconsistent about write speed: product details show 170MB/s, while capacity-specific manufacturer information states up to 120MB/s for 128GB. The 170MB/s claim is specified for 256GB–1TB capacities. The 245MB/s read figure is a maximum requiring a compatible host. The title says an adapter is included, but no package inventory confirms it. Check the selected listing and device compatibility before buying.

Who is it for?

A good fit for

Action-cam users seeking a 128 GB card with a listed V30 rating for video capture.
Phone, tablet, laptop and handheld-console owners who need removable storage, provided their device supports microSDXC.
Buyers transferring large files who have a host device capable of using the stated peak read speed.

Less suited to

Buyers who need a confirmed write speed or package contents without checking the selected listing.
Devices that do not accept microSDXC cards or cannot use the card’s claimed peak transfer speeds.

SANDISK Extreme 128GB microSDXC UHS-I Card · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.7 / 5 · 1,631 ratings

5 stars87%87%
4 stars7%7%
3 stars3%3%
2 stars0%0%
1 star3%3%

Aggregate ratings are strongly weighted toward five-star responses, while a smaller share falls in lower categories, including some one-star ratings. No review themes or reasons are supplied, so the ratings do not establish specific strengths or defects. For buyers considering this card for video capture or large transfers, the stated V30 rating and peak speed claims are relevant product information, not proof of customer-reported performance.

Frequently asked questions

What capacity is this SANDISK Extreme card?

The listing specifies 128 GB.

Does it include an SD adapter?

The title claims an adapter is included, but the supplied package details do not confirm the box contents. Check the selected listing before ordering.

What write speed should I expect?

The listing gives conflicting figures. Product details show 170MB/s, while the manufacturer’s capacity-specific information states up to 120MB/s for 128GB. Actual speeds may be lower depending on the host and conditions.

Will it reach 245MB/s read speed in my device?

That is a listed maximum, and the manufacturer says the card needs a compatible device capable of exceeding standard UHS-I speeds. Performance may be lower depending on the device and conditions.