Environmental-Friendly MaterialsThe password piggy bank is made of high quality ABS plastic, non-toxic, odorless and not break easily. An interesting money box customized for kids, develop their money-saving concept and cultivate the good habit of saving. Automatic Paper Money ScrollInsert the paper money into the slot on top of kids safe, it can be automatically rolled into the ATM machine money box instead of sliding in. Very convenient to money management. (But it doesn't work if the paper is too old or too soft) Password Safe ProtectionThis money saving box can only be opened when you enter the 4 digit password. After the green light turn on, you can turn the knob clockwise and open the door. (Default: "0000" Changeable passwords as you like). No one can open the safe without a password. High Storage CapacityKids ATM Bank can store 600 pieces of coins or 100 pieces of paper money. Greatly help your kids to protect personal stuff. They will love this practical piggy bank toy. Battery Required: 3 AA batteries (Not included). Perfect Gift for KidsDigital money box is equipped with a beautiful color box, which is the best gift for birthday, christmas, halloween, thanksgiving, easter, reward or any other holiday.