1. Visual design 2.Metalic surface 3.Original Flash Chip 4.Interface: USB2.0 5.Specifications: Reading Speed: 10MB/s+ 6.2 years limited warranty 7.About capacity: 1GB=approximately 0.92GB-0.97GB 2GB=approximately 1.7GB-1.85GB 4GB=approximately 3.5GB-3.7GB 8GB=approximately 7.4GB-7.8GB 16GB=approximately 14GB-15GB 32GB=approximately 28GB-30GB 64GB=approximately 58GB-59GB 128GB=approximately 115GB-120GB