512GB Storage Capacity, UHS-I / V30 / U3 / Class 10, Max Read Speed: 180 MB/s, Max Write Speed: 130 MB/s, Min Write Speed: 30 MB/s, Magnet, X-Ray, Drop, and Waterproof, Withstands Extreme Temperatures, Withstands 10,000 Insertion Cycles, Includes Full-Sized SDXC Card Reader. Designed for photographers and digital media professionals the PRO Plus UHS-I SDXC Memory Card from Samsung features a storage capacity of 512GB and takes advantage of the UHS-I bus to support read speeds up to 180 MB/s and write speeds up to 130 MB/s. Its V30/U3 class rating guarantees write speeds won't drop below 30 MB/s making it suitable for 4K Full HD and 3D video as well as raw and JPEG captures plus rapid shutter bursts. The full-sized SD card reader connects to your host system via USB-A so you can easily download files either at home or on the go.As with most Samsung cards this memory card is resistant to water X-rays magnets shocks drops and wear. It is also able to withstand temperatures from -13 to 185? F so you can take it with you into extreme environments including snow and deserts. If you're concerned about protecting the content on this card there is a built-in write-protect switch.