Product Description: how to use: 1. Install your normal 3 Aa batteries. Enter a four-digit password (default 0000); 2. The green light is on, turn the knob clockwise to open the door. Note: If you enter the wrong password, the red light will light up and remind you "please try again". How to change the password: 1. Enter the current password (default 0000) to open the safe door. Long press the "*" key, the green light and red light will flash. 2. Enter 4 new passwords within 15 seconds, according to " "Confirm the new password storage. The two lights stop flashing. 3. If no new password is entered within 15 seconds, the program will stop and the program must be restarted. Release the "*" button and close the door. Note: If you forget the password, you can remove the battery. After 5 minutes, install the battery and the password will be restored. Code: 0000, then you can reset your password again. About the battery: 1. Please use new batteries, 3x1.5v Aa batteries (not including products) 2. Do not mix new and old batteries. 3. If you do not use it for several weeks, please remove the battery. Specification: 1. Material: environmentally friendly ABS plastic 2. Color: pink and black 3. Power supply: 3x1.5v Aa battery (not included) 4. Product size: 8.5 X 5.1x7.1 inches 5. Product weight: 560 grams The package includes: 1 X Electronic piggy bank 1 X English user manual Our products have been well tested before shipment, please rest assured to buy, if you have any questions, please contact the seller for help, we will help you immediately. "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution."