NBA Bulls Cartoon USB Flash DrivesAbout usb capacity:The real capacity of usb on computer is different from the said capacity from supplier because the conversion way is different between MB and GB. Computer counts on 1024 while suppliers count on 1000. So the real capacity is always less than the said capacity. Generally the real capacity is about 90% of the said capacity. For example, For 4GB, the real capacity is  about 3.5-3.8GB; For 8GB, the real capacity is about 7.2-7.6 GB; For 16gb, the real capacity is about 14.5- 15.2 GB.Specifications: MaterialPVCStore capacity128MB, 256MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB, 32GB, 64GBWeight20gPackagePolybag or gift boxWriting speed4-10 MB/ SReading speed10-20 MB/ sData retention timeMore than 10 yearsWriting cyclesOver 1000,000 timesServiceData Freeload, Non-Erasable, Auto running, Encryption, Custom Icon Creation, Locked / Hidden contentsShapeNBA nullsFeatures: 1. USB 2.0 Hot Plugs & Play2. No external power required3. DO NOT pull out when copy files, because it is easy to damage, or reduce the use of time.4. USB interface: High speed USB 2.0 and USB 1.1 compatible.