Samsung Portable SSD T1 250GB USB 3.0 Drive Review
As the name of the product clearly states the T1 (available in 250/500/1000GB capacities) is basically an SSD (850 EVO mSATA model to be exact) placed inside an USB 3.0 compatible external enclosure which thanks to the size of interior components (just like with any SSD) is very compact and not that much larger compared to a regular USB flash drive.