Duracell Professional USB flash drives are available from 8GB to 128GB capacities. They feature a convenient capless design with a retractable USB connector to protect your data while in transit. Simply push or pull to expose and retract the connector. With peak sequential read/write speeds of 100/5 MBps (megabytes per second) the Duracell Professional USB 3.0 drive offers ultra fast data transfer speeds. (USB 3.0 port required).