Built for delivering high-speed data transfer, the Sony 128GB M Series UHS-II SDXC Class 10 Memory Card makes life easy during professional 4K video production. The memory card works with UHS-II devices and offers backward compatibility with UHS-I devices. The impressive data reading and writing speed up to 260 Mbps and 100 Mbps enables RAW burst capture along with UHD video shooting. With the UHS Speed Class 3 rating, the writing speed of the card remains above 30 Mbps. The integrated write-protect switch ensures prevents overwriting of data. A free File Rescue software can be downloaded to retrieve deleted files. You can use the memory card in challenging weather as it is resistant to dust, water, UV rays, X-rays, static, and extreme temperatures.