- SuperSpeed USB 3.1 data transfer interface
- Cap-less design with retractable USB connector that can prevent cap-loss problem
- Strap hole design to enable easier storage and carrying
Featuring the SuperSpeed USB 3.1 interface and extremely large space, the B21 can not only let users to store all their favorite media and important files but also enables super-fast data transferring speed. The intelligent retractable USB connector allows users to operate with a simple push of a thumb, and the cap-less design can keep users away from worries about cap loss.