SanDisk Extreme PRO SDXC card 200MB s UHSI U3 V30 256GB SDSDXXD-256G-GN4IN
It is x-ray, temperature, water, and shock resistant. You are equipped to record in UHS speed class 3 (U3) with shot speeds of up to 140MBs 256GB to 1TB, (90MBs 32GB-128GB) and capture high-resolution, stutter-free 4K UHD video.