The Stack-On Personal Safe's electronic lock can be programmed by the user with a backup key override for moments when you desperately need to get to your valuables. Its electronic lock also has an easy-to-read key pad and features a low battery warning light. A time out period occurs after three incorrect combination attempts. The safe features a removable shelf for personal storage preferences. The foam padded bottom prevents scratching or rough handling of your valuable items. The Personal Safe's solid steel, pry-resistant door has concealed hinges and two steel live action locking bolts. This is a California-approved Firearm Safety Device that meets the requirements of Penal Code section 23655 and the regulations issued thereunder. Back-up key included.