512GB Storage Capacity, UHS-II / V60 / U3 / Class 10, Max Read Speed: 250 MB/s, Max Write Speed: 130 MB/s, Min Write Speed: 60 MB/s, Records 4K, UHD 4K, Full HD & 3D Video, Records High Bit Rate MPEG-4, Error Correction & Wear-Leveling, Temperature / Shock / X-Ray Proof, Built-In Write-Protect Switch. The 512GB UHS-II SDXC Memory Card from ProGrade Digital features a storage capacity of 512GB and takes advantage of the UHS-II bus to support maximum read speeds of 250 MB/s and maximum write speeds of 130 MB/s. This card has also been designed with the V60 Video Speed Class rating which guarantees minimum write speeds of at least 60 MB/s allowing the card to be used in DSLRs mirrorless cameras camcorders and digital cinema cameras to produce 4K UHD 4K 3D Full HD and high bit rate MPEG-4 video. It is also well suited for raw photos and rapid-fire bursts. UHS-II cards achieve their speed through an extra row of pins and while this card has been designed for cameras that are UHS-II / V60 compatible it may be used in devices that do not support UHS-II / V60. However bear in mind that this card will then default to your device's speed class and bus rating such as UHS-II and V30 which supports minimum write speeds of 30 MB/s or UHS-I and U3 which also supports minimum write speeds of 30 MB/s. If your device does not support U3 this card is compatible with the U1 and Class 10 standards each of which guarantee minimum write speeds of 10 MB/s. Built for extreme conditions ProGrade Digital's 512GB UHS-II SDXC Memory Card is able to withstand temperatures from -13 to 185? F allowing you to take this card with you into extreme environments such as snow and deserts. It is also X-ray proof and shockproof and a built-in write protect switch helps to safeguard your content from being erased.