Designed for the most demanding applications, this Verbatim SD memory card is rated at UHS-I Speed Class 3, making it suitable for the latest 4K Ultra HD video recording and high definition burst photography. Professional SDXC memory card Ideal for very high resolution digital photography and video UHS-I Speed Class 3 (U3) suitable for 4K Ultra HD video recording Read speeds up to 90 MB/s, write speeds up to 45 MB/s Compact physical size: 32 x 24 mm Capacity: 64GB Colour: Black