Cool Drive U350, the world's first, mechanical pen-like USB flash drive. The design target was to create a user friendly USB flash drive that has the mechanisms of an everyday pen. This design not only provides maximum protection for the USB connector, it also solves the problem of people who lose their USB flash drive lids frequently. The weight is 15 grams. It is shock and vibration proved, providing unsurpassed stability which traditional hard disks lack. A professional personal document management software, USB Notebook Professional, is included.