Product Details  usb flash drive + ball pen  model: UP-B (USB pen)size: 144x16.5x16.5 mmhousing: metalcolor: silver Specifications: 1) Combination of USB flash drive and metal ball pen, good for gift with logo printing or engraving 2) Compact and lightweight solution of mobile storage 3) Capacity: 16M, 32M, 64M, 128M, 256M, 512M, 1G, 2G, 4G 4) USB interface: USB 1.1/2.0 5) Fast data transfer rate: a) USB 1.1: 1.1MB/s for read, 1.0MB/s for write b) USB2.0: 11MB/s for read, 10MB/s for write 6) Hardware and software data protection technology prevent data corruption even if it is powered off or unplugged during data transfer 7) LED light: LED indicates power, read/write 8) Disk partitions and password check for security disk available 9) PC boot up as USB zip disk and USB hard disk 10) Auto run function, enable auto presentation of customer advertisement when plug into computer 11) provide other OEM services, ie. logo printing, data proload. 12) Windows, Mac and Linux compatible, without additional driver (except Win 98/98SE) 13) Data retention: 10 years  14) Warranty: 2 year