Designed for those who want to capture Ultra HD 4K and Full HD video, as well as raw and JPEG stills and bursts 1TB Superior UHS-I microSDXC Memory from Silicon Power keeps up with the pace of your life. Built with a storage capacity of up to 1TB, this card features a maximum read speed of 100 MB/s, a maximum write speed of 80 MB/s, and a thanks to its V30 / U3 rating, write speeds are guaranteed not to drop below 30 MB/s. If your device does not support V30 / U3, there is backward compatibility for Class 10 / U1 devices. Aside from support for UHS-I, V30, and U3, Silicon Power built this card with support for the Application Performance Class 1 (A1) spec, which includes optimizations to give Android users an improved mobile experience, delivering faster mobile app performance. The A1 spec allows the card to manage random read input-output access per second (IOPS) operations, so it can quickly open apps and process accompanying tasks, such as audio, graphics, saved profiles, and in-app permissions. Designed and tested to withstand harsh environments, Silicon Power's 1TB Superior card is resistant against water, shock, and x-rays, as well as temperature extremes of 32 to 158F. It can also endure a minimum of 10,000 insertions. So that this card may be used in SD-compatible devices, a microSD to SD adapter is included.