Advanced Performance for Action and Cinema Cameras Capture smooth, continuous 4K Ultra HD footage, without corruption or dropped frames, with the Delkin microSD 660X UHSI (U3) Memory Card. Specifically designed to excel in action and cinema cameras, the Delkin 660X microSD card boasts speeds that are able to keep up with even the most demanding video modes. It is the ideal choice for capturing highspeed action shots, as well as super slowmotion footage. Built for Fast, Flawless Performance With write speeds surpassing 80MB/s, the 660X microSD card is able to record flawless 4K Ultra HD, 3D & Full HD video footage at frame rates surpassing 120fps. It is also capable of capturing highresolution timelapse photography, HDR (high dynamic range) photos, continuous burst shooting, and other demanding video modes, such as GoPros Protune. The microSD card is also rated UHSI Speed Class 3 (U3), guaranteeing a minimum sustained write speed of 30MB/s. This assures that your recordings will not randomly stop or that frames will not be dropped. With read speeds that can reach up to 99MB/s, the microSD card ensures quick, efficient data transfer from card to computer. The improved user workflow reduces transfer time dramatically and allows you to view and work on your files sooner. Rugged & Durable Built to endure even the most strenuous shooting environments, the microSD card is able to withstand temperatures ranging from 0C to 70C. Confidently use it in your camera wherever you go, whether youre in freezing, snowy climates or in hot, humid desert areas. In addition, the card is also waterproof, shockproof, dustproof and Xray proof. Included SD Adapter Each Delkin microSD card comes with a fullsized SD card adapter, enabling you to use your microSD card in a DSLR, camcorder, pointandshoot camera or any other SD compatible device. Simply slide the microSD card into the included SD adapter and you are ready to go.