This offline password vault was named The Best by the HS Institute because it had the largest capacity and provided the easiest retrieval of personal data. Safeguarding account information in its flash memory where online identity thieves cannot reach, The Best model stores up to 400 passwords, more than twice the capacity of lesser models. Its large backlit LCD screen and QWERTY keyboard makes entering and looking up data less cumbersome and error prone than models with undersized displays and disorganized keyboards. Locks for 30 minutes if the master password is entered incorrectly, preventing unauthorized access. Required three AAA batteries. 4 3/4" W x 3 1/2" D x 1" H. (3 oz.)