Promotional usb pens
Specifications:
*Function: USB memory, ball pens, pda pens
*Refill: Black, Blue, Red
*Memory Capacity: 64M/ 128M/ 256MB/ 512MB/ 1GB/ 2GB/ 4GB/ 8GB
*Interface: USB2. 0
*Operation System: Windows 98/ME/2K/XP and Linux2. 4/Mac OS9. 0 above