... ) Capacity: 128MB,256MB, 512MB, 1G, 2G, 4G,8G 2) Both USB 1.1 and 2.0 available (1) Material :100% silicon ... rubber ,harmless for body ,Green material (2) Bracelet size : 208mm circumference*18mm width ... ) Capacity: 128MB,256, 512MB, 1G, 2G, 4G,8GB for USB driver bracelet(5) Both USB 1.1 and 2.0 available(6) Driverless ...