... gift,promotion,environmental Promotion silicone USB wristband of high Capacity: USB Flash Drive,USB Flash Memory,Stylish ... USB Wristband,Gift Promotion silicone USB wristband of high Capacity: SpecificationMaterial100% Environmental SiliconeSize200*12*2mmAvailable Capacities1G,2GInterface ... data is being read or writtenCompatibilityPC or Notebook with a USB InterfaceData Transfer Speed21MB for read ...