I've been looking for a safe for my home use. I wanted the convenience of a typical hotel room safe. I was not happy with any of the options until I found Mycube and in particular the Biocube Plus. This safe has everything I wanted. A simple 4 to 6 digit code to open and then one digit to close. It also has a biometric feature which enables the user to enter up to 10 fingerprints. It requires four AA batteries which are included. In case you forget to change your batteries and your safe dies, there is a key for a final way to enter your safe and change the batteries. If you're looking for a place to safely store your jewelry, the 7 Mix Trays stack and work beautifully. The customer service is incredible. Before making the purchase I had several questions which I emailed. I received responses to all my questions very promptly. I ordered the safe on a Friday and received it by FedEx on Sunday. I had a question or two after receiving the safe and received immediate responses. I am totally impressed with Mycube products and with their customer service and would recommend them highly.