silicone usb: storage:16/32/64/128/256/521mb/1/2/4/8gb/16gb material: silicone silicone usb:capacity:64mb,128mb, 256mb, 512mb, 1gb, 2gb, 4gb, 8gbcompatibility: PC or Notebook with a USB interfaceOperating Systems: Windows Vista/XP/2000/ME/98/95data retention: 10 years minimumWarranty: lifetime warranty