Verbatim Pro U3 Micro SDHC/SDXC Cards Verbatim Pro memory cards give Pro level performance to advanced cameras and HD camcorders. UHS Speed Class 3 (U3) rating means you can capture 4k ultra HD and Full HD video then transfer quickly to your computer for viewing and editing. Compatible with any device with an SDHC/SDXC* memory card slot. Read Speed: up to 90MB/Sec.** Write Speed: up to 45MB/Sec.** Suitable for 4k ultra HD video capture *SDXC compatible host device required **UHS-1 compatible device required, actual performance may vary depending on host device, interface & usage conditions Product Dimensions: 32mm x 24mm x 2.1mm Product weight: 1.8 grams Capacity: 32GB System requirements: Compatible with cameras and SDHC or SDXC supporting host devices.