Detailed Product Description Electronic safe box, heavy duty framework3-8 digital code, operating tone, three incorrect entry buzzer and auto-locking function, dual control by knob or kock and electronic key, two overide keys, steel expansion bolts and velvet pad, some models have shelves, door: 4mm, body: 2mmouter size: 310*200*200 mminner size: 300*140*190 mm