UHS Speed Class 1 (U1), Video Speed Class 10 (V10):Optimized for FULL HD (1080P) video recording and playback. Up to 25MB/s write speed:Ideal for the use in bridge and reflex cameras for high resolution photos. Up to 85MB/s read speed:To allow fast transfer from the memory card onto your computer or any otherSD compatible devices. Up to 128GB storage capacity:To record lots of Full HD videos and take lots of high resolutions photoswithout running out of space.