Lexar 64GB Professional 3500x CFast 2.0 Memory Card for 4K Video Cameras, Up to 525MB/s Read, Up to 445MB/s Write Speed This Item Includes: Lexar 64GB Professional 3500x CFast 2.0 Memory Card with Downloadable Image Rescue Software - Lexar Lifetime Limited Warranty Compatibility: BlackMagic UrsaBlackMagic Ursa MiniAtomos Ninja StarCanon XC10Canon C300 Mark II Cameras Please Note: for ARRI AMIRA & Alexa Use the Lexar 3600x Cfast Cards Capacity: 64GB Speed: Read: Up to 525MB/sWrite: Up to 445MB/s