SanDisk’s Extreme Portable SSD is an external USB-C solid state drive for outdoor photographers and anyone who needs a durable high speed drive. It’s IP55 water- and dust-resistant and can easily be hooked or tied. Available in 250GB, 500GB or 1TB.
Made for Android mobile devices, the SanDisk Ultra microSD card now maxes out at 400GB. That should be more than enough space to keep all the media, apps and files that you want right on your device. Its 100MB/s transfer speed should be fast enough for even 4K video.