1) Combination of 3-8 digits2) Security and power status shown by a series of LED displays and buzzer feedback 3) 4 x "AA" size batteries4) With manual override key5) Constructed of solid steel6) Intruder tamper resistant7) Pre-drilled holes inside the safe with fixing bolts8) Powder coated interior and exterior, in various colors9) Product size (H x W x D): 575 x 360 x 330m