Kingston's microSDXC UHS-I U3 (Ultra High-Speed Bus, Speed Class 3) Flash card features impressive speeds that allow users to capture cinema-quality full HD (1080p), ultra HD (2160p), 3D and 4K2K videos. It's a perfect match for high-performance, small form factor devices such as smartphones and portable camcorders. With speeds of 90 MB/s read and 80 MB/s write. Higher sustained write speeds ensure video integrity by reducing stutter and allow photographers to shoot in continuous burst mode. Its small size is the standard expandable storage option for many tablets, smartphones and action cameras on the market today. This versatile card is waterproof, shock and vibration proof, x-ray proof and temperature proof. Photographers can feel secure using the card for action photography and in harsh or unstable conditions.