The SanDisk Extreme Portable SSD 250GB is an external SSD for demanding users. If you're taking lots of photos on the go, you can safely store them on this SSD, because the drive has an IP55 rating. That means it's splash proof and dustproof, so all your photos will survive a rainstorm or a walk in the sand. On top of that, this SSD writes quickly. Transferring a folder of high-resolution photos with a total size of 4GB will take around 8 seconds, thanks to the 550MB/s transfer speed. You can connect the drive to a laptop with a USB-C port via 2nd-generation USB 3.1. The SSD has an integrated keyring, so you can hang the drive from your camera strap, allowing for easy access. Because of its 79-gram weight, your SSD weighs about the same as a passport, and you'll barely feel the drive while you're on the go.