Safe and Convenient: A 4-digit password means 10,000 unique combinations, which is difficult for the thief to crack. Don't forget the password and you don't need to use the key. Resettable: The 4-digit combination is easy to reset as needed and well remembered. Humanized Design: Portable and convenient to see combination with side window design. Largely used : Perfect for most light duty such as cabinets, cupboards, luggage, campus, toolbox, fence, storage, gym etc. Long term warranty: We offer 12 months warranty including prompt replacement or refund. If you have any questions regarding the padlock, do not hesitate to contact us for more details on setting up and using the device.