Yes. Actually, it is at least 3x more capable at U3 than Class 10. Class 10 is 10 MB per second. There is a new "U" series defined for video, that extends the old class system. U1 has the same rate as Class 10. U3 is 30 MB per second. The Extreme is a U3 card.

Can i record music on this card? it so, how many hours of music will it hold? thank you, brian

Yes, you can record any digital files on this card. It is extremely fast, and can even handle 4K videos, and digital images. It's rated very fast. So, music away! The hours of recording have to do with the quality and size of the files. I would suggest that you record onto your PC/Laptop, etc. Then, transfer to this card. The card will handle recording directly, but you might like to do some editing in between. Here's a rough estimate of file size vs storage space: https://qph.fs.quoracdn.net/main-qimg-689dff666b8e146d2e19bce49ddde53e

can it be used for the nintendo switch?

According to Nintendo, the Switch can accept microSD and microSDXC cards, and supports up to 2TB of total storage. This card is fast and should enhance your gaming experience.

How come this sd card written shipping fed is free but it still charge after i process the payment?

$25.00 shipping though is super overkill in my opinion for a dang SD card. Prime member or not I would return it for having the audacity to charge that much for such a small/lightweight item.

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⚡ Store Fast, Shoot Faster, Live Limitless!

CAPTURE EVERY MOMENT - 130MB/s write speeds ensure smooth 4K and 5K UHD video recording without a hitch.
APP READY PERFORMANCE - A2-rated for lightning-fast app launches and seamless multitasking on your mobile devices.
BLAZING FAST TRANSFERS - Experience up to 190MB/s read speeds with SanDisk QuickFlow Technology for instant offloads.
UNIVERSAL COMPATIBILITY - Class 10, U3, V30 certified for reliable performance across smartphones, drones, and action cams.
BUILT TO BRAVE THE ELEMENTS - Temperature-proof, waterproof, and X-ray proof – your data stays safe no matter where you go.

The SanDisk 512GB Extreme microSDXC card delivers professional-grade speed with up to 190MB/s read and 130MB/s write speeds, powered by proprietary QuickFlow Technology. Designed for 4K and 5K UHD video capture, it’s A2-rated for superior app performance and built tough with temperature, water, and X-ray resistance. Perfect for creators and professionals demanding reliable, high-capacity storage on the go.

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Hardware Interface	microSDXC
Secure Digital Association Speed Class	Class 10
Product Dimensions	15L x 11W Millimeters
Manufacturer	samsung
UPC	619659189648
Global Trade Identification Number	00619659189648
Model	SDSQXAV-512G-GN6MA
Item model number	SDSQXAV-512G-GN6MA
Flash memory type	Micro SDXC
Digital storage capacity	512 GB
Removable Storage Native Capacity	1 TB
Special Features	Temperature Proof, Water Proof, X Ray Proof
Number of items	1
Batteries Included	No
Batteries Required	No
Data Transfer Rate	1 Megabits Per Second
Does it contain liquid?	No
Country of Origin	China
Item Weight	14 g

SanDisk 512GB Extreme microSDXC UHS-I Memory Card with Adapter - C10, U3, V30, 4K, 5K, A2, Micro SD Card - SDSQXAV-512G-GN6MA

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