The SanDisk Extreme microSDXC memory card lets you save time transferring media with read speeds of up to 190MB/s(1) powered by SanDisk QuickFlow Technology(2). Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). With write speeds up to 130MB/s(1) it’s ideal for your Android smartphone, action cameras, or drones. This high-performance microSD card handles 4K and 5K UHD video recording, Full HD video(3), and high-resolution photos. | (1)Up to 190MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Up to 130MB/s write speeds. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. (2)SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 400GB, 512GB, and 1TB capacities. [1GB=1,000,000,000 bytes and 1TB=1,000,000,000,000 bytes.] Actual user storage less. (3)Compatible device required. Full HD (1920x1080) and 4K UHD (3840 x 2160), and 5K UHD (5120 X 2880) support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.Rated A2 for faster loading and in-app performance (A2 performance is 4000 read IOPS, 2000 write IOPS. Results may vary based on host device, app type and other factors). 4K and 5K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (Compatible device required. Full HD (1920x1080), 4K UHD (3840 x 2160), and 5K UHD (5120 X 2880) support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site. UHS Speed Class 3 (U3) designates a performance option designed to support real-time video recording with UHS-enabled host devices. Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS-enabled host devices. See the SD Association’s official website.). Up to 130MB/s write speeds for fast shooting (Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes.). Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately). Save time with card offload speeds of up to 190MB/s powered by SanDisk QuickFlow Technology (Up to 190MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 400GB, 512GB, and 1TB capacities. 1GB=1,000,000,000 bytes and 1TB=1,000,000,000,000 bytes. Actual user storage less.).Hardware Interface: microSDXC. Item Weight: 10 Grams. Read Speed: 190 Megabytes Per Second. Special Feature: water_proof, x_ray_proof, temperature_proof. Color: Gold/Red. Compatible Devices: Action Cameras, Digital Cameras, Tablets, Android Smart Phones, Drones. Memory Storage Capacity: 256 GB. Flash Memory Type: Micro SDXC. Series: SanDisk Extreme microSD UHS-I Card with Adapter. Brand: SanDisk. Best Sellers Rank: #6 in Micro SD Memory Cards. Customer Reviews: 4.8 out of 5 stars 43,202 ratings 4.8 out of 5 stars. Date First Available: ?June 14, 2022. : ?B09X7CRKRZ. Language: ?English, English, English, English. Manufacturer: ?Western Digital Technologies, Inc. Batteries: ?1 Lithium Ion batteries required. Color: ?Gold/Red. Item Dimensions LxWxH: ?0.04 x 0.59 x 0.43 inches. Product Dimensions: ?0.04 x 0.59 x 0.43 inches. Item Weight: ?0.353 ounces. Item model number: ?SDSQXAV-256G-GN6MA. Series: ?SanDisk Extreme microSD UHS-I Card with Adapter. Brand: ?SanDisk. Memory Speed: ?1785.