Metal USB STMK 58-16 GB

* Material: The casing appears to be made of polished silver-colored metal, likely stainless steel or aluminum.
* Design: It has a simple, rectangular body with a capless design, where the USB connector is always exposed. One end has an integrated loop that is attached to a standard split-ring key ring.
* Connector: The standard USB connector is visible.
* Portability: The compact size and key ring attachment make it very easy to carry on a set of keys.
* Durability: The metal casing suggests it would be relatively durable.
* Waterproof/Dustproof: While the image doesn't explicitly confirm this, metal capless designs are sometimes marketed as water and dust resistant due to the lack of moving parts or openings when in use.