✅【 Automatic Banknote Reeling Machine 】 Aim the banknotes at the cash entrance, there will be a singing voice "Master, you are saving money again, you are awesome!" and the green light will automatically suck the banknotes. Be careful not to use too crumpled banknotes, otherwise, they may not be sucked in.Batteries:3 AA batteries (batteries are not included in accessories). ✅【 Easy To Change The Password 】To open the package and reinstall the battery, to enter the original password and open the door. To change the new password(The password only be changed after opening the door)The steps to change the password are as follows:①Enter the original password to open the door②Press the * key③Please enter the 4-digit new password④Press the # key to end. If you forget the password, just remove the battery and install it again, and it will return to the original password. ✅【To Store A Lot Of Coins And Cash 】The width of the bill entrance is 9cm, which is to store any denomination of US dollars. The width of the coin entrance is 4.5cm, and any coin of any denomination to put in. The piggy bank has a huge capacity. It holds 600 Pieces $1 coins or 100 pieces $5 bills.Size: 13.5*11.5*20cm. ✅【 Easy Take Out Money 】To take out money, a sound will be made after you input a 4-digit password, "Please verify your fingerprint".And you put any finger on the fingerprint, a sound will be made, "The password is correct, the door will open, there will be a mechanical door opening sound" and it will light up in green. If the password is wrong, a red light will appear and you will need to re-enter the password. ✅【 Fight with Dengdengdeng 】Parents set goals with their children, such as saving money to buy a bicycle they like, or saving five dollars a day for a month, and then rewarding change for the children's discretion. This process, will not only help children's understanding and planning of money, but also exercise self-control, and will not interrupt the goal due to other temptations.