TRANSCEND 3 TB&EXTERNAL HARD&DRIVE STOREJET 25H3 USB 3.0 PORTABLE HARD DRIVE COMBINES THE SUPERIOR PERFORMANCE OF USB 3.0, VAST STORAGE SPACE, EYE-CATCHING ENCLOSURE, AND A THREE-STAGE SHOCK PROTECTION SYSTEM THAT MEETS U.S. MILITARY DROP-TEST&STANDARDS. WHAT ELSE CAN YOU ASK FOR?&FEATURES – MILITARY-GRADE SHOCK RESISTANCE FULLY COMPLIANT WITH THE HI-SPEED USB 2.0 SPECIFICATION, ADVANCED 3-STAGE SHOCK PROTECTION SYSTEM, DURABLE ANTI-SHOCK RUBBER OUTER CASE, ADVANCED INTERNAL HARD DRIVE SUSPENSION SYSTEM, QUICK RECONNECT BUTTON – AFTER SAFELY REMOVING THE HARD DRIVE FROM THE SYSTEM, PRESS TO RECONNECT THE DRIVE WITHOUT HAVING TO UNPLUG AND RE-PLUG THE USB CONNECTOR AGAIN,ONE TOUCH AUTO-BACKUP BUTTON.