Retractable slider design - keep connector free of dirt and dust Impact resistant with locking slider High speed data transfer: Read > 50 MB/sWrite > 15 MB/s Ideal for backup and portable storage Connect to string type keychain The V7 USB 3. 0 Flash Drive features a retractable, slide-in/out design that will keep the connector free of dust and dirt, plus it has an impact-resistant locking slider, so you can be sure it will stay connected when you plug it in. The Flash Drive is made for maximum portability with a key-ring friendly design, and data transfer is a snap with Read/Write speeds of up to 50MB/s and 15MB/s.