The default password is iloveu, you can also set up their own passwords (the important thing is that if you want to tell a person a little secret, you can write it on a small note and put it in a puzzle lock). Measures approx: 14cm long. Hidden compartment measures approx: 8cm long x 2.5cm diameter. Exquisite packaging, You can see pictures, I believe you will like it! when you open the code lock, you can see two rings, with Lord of the Rings puzzle box for adults or wife birthday gift ideas.Creative and romantic gifts, only for you! Of course, you can also buy, in which more precious rings or necklaces, and so on. When you set a new password, only need to turn the screws, and the sequence of letters re editing 6 password ring. The Da Vinci code mini cryptex, Christmas and halloween are the most interesting gifts for friends, children and parents.Of course, Valentine's day is also the best gift for others. No extra cost.