Feature: 1. UNLOCKING METHOD: This electronic safe box uses password and emergency key to unlock, and can be freely set with a 3-8 digit electronic password. 2. STEEL MATERIAL: The security home case is made of excellent steel, with high hardness, wear resistance, and can withstand harsh environments. 3. SECURITY STRUCTURE: This safe case is equipped with anti prying steel door and concealed hinge to prevent unauthorized access to your valuables by others. 4. ALARM SYSTEM: If the password is incorrect 3 times in a row, the alarm will sound. Use the key to open the box and remove the battery to stop the beep. 5. APPLICABLE SCENES: This security box can store jewelry, bills, documents, etc., making it suitable for use at home, hotels, dormitories, and companies. Specification: Item Type: Security Case Power Supply: 4 x Universal AA Battery (not included) Application: Hotels, dormitories, homes, companies Color: Black Product Thickness: Chassis: 1.2mm / 0.05in Door Panel: 3mm / 0.12in Opening Method: Password and emergency key Material: All Steel Password Setting: Using imported high performance computer chips, 3-8 digit electronic passwords can be freely set Suggest Use: Jewelry, bills, documents, small amounts of cash and other important items. Package List: 1 x Security Case1 x User Manual2 x Spare Keys4 x Expansion Screw