Great for hotels, dorm rooms or home offices. Large enough for most laptops (up to 17 inches). Electronic motorized lock with LCD display. User codes: 1 master code and 1 user code 3 to 8 digits. Power supply is 4 AA batteries inserted on inside of safe. Includes tamper-proof feature: 5 minute hold after 4 incorrect code entries. Codes can be easily reset with keypad. Two emergency override keys provided (not needed to open safe). External dimensions: 7.87 inches high x 16.93 inches wide x 13.78 inches deep. Internal dimensions: 7.48 inches high x 16.54 inches wide x 11.81 inches deep. Weight: 30 lbs. Bolting/mounting: 4 floor and 4 wall mount holes. Volume discounts for large projects. Please call 800-453-4195 for more information.