Retractable slider design keep connector free of dirt and dust impact resistant with locking slider high speed data transfer read gt 50 mbswrite gt 15 mbs ideal for backup and portable storage connect to string type keychain the v7 usb 30 flash drive features a retractable slide inout 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 ma