Size: 12x12.95x18.5cm. Capacity: Store 800 pieces of coins. Instructions for use: Install batteries before use: 3 AA batteries. (not included) Notice: Do not mix new and old batteries. Never mix alkaline batteries with other types of batteries. If you are not going to use the piggy bank for several weeks, remove the battery. Because the chemicals leaking from the battery can damage its electronic parts. Instructions: To open the piggy bank, you first need to enter a four-digit code. The default password of the safe is: 0000. Enter the 4-digit password and the green light will turn on. If you enter the wrong password, the red light will turn on and a "PLEASE TRY AGAIN" sound will tell you. Turn the knob clockwise to open the door. The green light will be on for about 10 seconds and you will hear a creaking sound of the door opening. If the door is open for more than 10 seconds, the green light goes off and a buzzer sounds every 20 seconds. To stop the beeping, just close the door. Put the banknotes into the banknote slot, and the banknotes can enter directly. Then press the password to withdraw money directly. When you're done, close the piggy bank door and lock it well. Follow the steps below to change your password: Enter the current password (default 0000) to open the piggy bank door. Long press the "*" button, the green light and red flashes. Enter a new 4-digit password within 15 seconds, press "#" to confirm to store the new password. Both lights stop flashing. (Note: If a new password is not entered within 15 seconds this program will stop and must be restarted.) Release the "*" button and close the door, beep or speak. Enter the current password and open the door. Push the switch (back side of the door) to the left or right to set the beep or talk. Close the safe door.