The stick that's what I was looking. It is small, measuring just 2.8 x 0.8 x 0.3 cm and fits on your key ring. For the small metal eyelet a short metal chain was included. The cap I can not lose now, because there are none. On the functionality of the "vulnerability" of the contacts had been no impact. Also the metal casing (probably steel) has not even been a scratch. I use this stick now about 1 month on a regular basis and am satisfied. FAT32 formatted, it runs on Mac and Windows. Lt. He system information actually 7.45 GB (8,003,817,472 bytes). The only drawback: If you want to plug it directly into the USB port on the device, you have to pretty "choking". I conclude, therefore, prefer him via USB extension cable, which I also already had this always because some devices do not have front port. Summary: Small but mighty!