The Pro Grade Digital microSDXC UHS-II V60 250R Memory Card is the perfect product for any action camcorder that utilizes microSD. Performance level is up to 250MB/s read speed and 130MB/s write speed and support video speed class V60, especially ideal for 4K video shooting. High-capacity video data transfer to PC at high speed Professional Grade Digital is 100% fully inspected during production and individually numbered to ensure high quality.