Package includes: 1 piece cryptex;1 pair artificial diamond ring(2pcs); 1 pair couples ring(2pcs); 1 piece card; 1 piece envelope; The default password is "ILOVEU"; you need to change the password; then you open it, and there are two rings inside Size: Measures approx: 14cm Long; Hidden compartment measures approx: 8cm Long * 2.5cm diameter Ideal gift: are the most interesting Christmas gifts for friends, children, and parents；Of course, Valentine's day is also the best gift for others Easy to set: when you set a new password, only need to turn the screws, and the sequence of letters re-editing 6 password ring; you can set the password to her or his English name, or the cipher or nickname between you(If you want to tell someone a little secret or give someone a surprise, you can put it in a puzzle lock)