[10PCS 4GB Mixed Colors]: DataOcean USB flash drives come with 10 colors, different colors to help you identify different content | [Metal cover rotating with keychain]:The 360° rotating design does not need to worry about losing the cap. Keychain design, don’t worry about losing the U disk | [COMPATIBILTY AND INTERFACE]:Compatible with USB 2.0 and backwards. No need to install any additional drivers to use to the flash drive. Support Win98/ME/2000/XP/Vista/7/8/10, Mac OS and Linux, support portable speakers, car speakers with USB 2.0 port | [After-sales Service]:12 month Warranty. Please contact us first for any problems with our jump drives. We will solve it as soon as possible. | [About the capacity and speed]:The available capacity: 3.7GB-3.8GB, FAT32 is factory default drive format.Transfer Speed: writing: 7M/s-12MB/s; reading: 12M/s-25MB/s

[10PCS 8GB Mixed Colors]: DataOcean USB flash drives come with 10 colors, different colors to help you identify different content | [Metal cover rotating with keychain]:The 360° rotating design does not need to worry about losing the cap. Keychain design, don’t worry about losing the U disk | [COMPATIBILTY AND INTERFACE]:Compatible with USB 2.0 and backwards. No need to install any additional drivers to use to the flash drive. Support Win98/ME/2000/XP/Vista/7/8/10, Mac OS and Linux, support portable speakers, car speakers with USB 2.0 port | [After-sales Service]:12 month Warranty. Please contact us first for any problems with our jump drives. We will solve it as soon as possible. | [About the capacity and speed]:The available capacity: 7.4GB-7.6GB, FAT32 is factory default drive format.Transfer Speed: writing: 7M/s-12MB/s; reading: 12M/s-25MB/s

[2PCS 64GB Mixed Colors]: DataOcean USB flash drives come with 2 colors, different colors to help you identify different content | [Metal cover rotating with keychain]:The 360° rotating design does not need to worry about losing the cap. Keychain design, don’t worry about losing the U disk | [COMPATIBILTY AND INTERFACE]:Compatible with USB 2.0 and backwards. No need to install any additional drivers to use to the flash drive. Support Win98/ME/2000/XP/Vista/7/8/10, Mac OS and Linux, support portable speakers, car speakers with USB 2.0 port | [After-sales Service]:12 month Warranty. Please contact us first for any problems with our jump drives. We will solve it as soon as possible. | [About the capacity and speed]:The available capacity: 58GB-58.5GB, exFAT is factory default drive format.Transfer Speed: writing: 7M/s-12MB/s; reading: 12M/s-25MB/s