Specifications:

-Capacity: 256GB

-Form Factor: microSDXC™

-Sequential Read Performance: Up to 880MB/s

-Sequential Write Performance: Up to 650MB/s

-Interface: PCIe Gen 3

-Dimensions (L x W x H): 0.59" x 0.43" x 0.04"

-Warranty: Lifetime...

Specifications:

-Capacity: 256GB

-Form Factor: microSDXC™

-Sequential Read Performance: Up to 880MB/s

-Sequential Write Performance: Up to 650MB/s

-Interface: PCIe Gen 3

-Dimensions (L x W x H): 0.59" x 0.43" x 0.04"

-Warranty: Lifetime Limited Warranty

-Weight: 0.26gms

-Model Number: SDSQXFN-128G-GN4NN

-Operating Temperature: -13°F to 185°F

-Non-Operating Temperature: -40°F to 185°F

Product Features:

• Ready for future superspeed products with a PCIe® NVMe™ interface and UHS-I speeds
• Up to 4.4 times faster read speeds than our fastest microSD™ UHS-I cards
• Waterproof, temperature-proof, humidity-proof, drop-proof, shock-proof, magnetic-proof, x-ray proof, and wear-out proof

-In The Box: SanDisk microSD™ Express Card 

Compatibility:

• Devices that include a microSDXC™ slot, including Android™ smartphones and tablets, action cams, drones, handheld gaming devices, and laptops.
• Devices that include microSD™ Express, microSD™ UHS-I, and microSD™ UHS-II slots.
• Performs at microSD™ UHS-I speeds when used with microSD™ UHS-I and microSD™ UHS-II devices.