Specification :

Metal Disk; Material: Metal ; size: 53*15*9mm 1.USB 2.0 Certified 2.Capacities: 128MB, 256MB, 512MB, 1GB ,2GB,4GB 3.For Mac and PC, No Driver Required 4.No External Power Required 5.Functions as Hard Drive 6.LED Indicated Power, Read/Write 7.Shock Resistance: 1000G 8.Min. Data Retention: 10 Years 9.Colors: Silver, Black, Blue, White, Red 10.Metal and Plastic finishing Accessories: USB Cable, CD Driver, Lanyard (Optional)