Cryptex Da Vinci Code Mini Cryptex Lock Puzzle Boxes with Hidden Compartments Anniversary Valentine's Day Romantic Birthday Gifts Cryptex Da Vinci Code Mini Cryptex Lock Puzzle Box with hidden compartments Anniversary Valentine's Day Romantic Birthday Gift Gift for her Mysterious box for her boyfriend, there is enough space to hold jewelry, keys, secret notes or anything of value Small objects. Romantic and mysterious wedding gift Valentine's day fun gifts Smart toys to exercise children's reasoning ability Unique choice of family puzzle games A good helper to hide secret objects such as keys and small notes Steps to modify password: 1. Set the password to ILOVEU and align it with the arrow, and take it out. 2. Use the screwdriver provided in the box to tighten the screws on both sides of the cylinder edge. 3. Delete all 6 password circles. 4. Set the letters according to the password you want, and align them with the internal slot of each password ring Assemble it. 5. Complete the assembly. 6. If you have any questions, please refer to the picture introduction in the purchase link. Product specification: Material: Zinc alloy + bronze Product size: 13.5*5.5*5.5cm Product weight: 720g Default password: ILOVEU Rings material: titanium steel Rings size: gold diameter 2cm, silver diameter 1.8cm Rings weight: gold 4.5g, silver 2.2g Package included: Da vinci code mini cryptex x1 Ring x2 Card x1 Strap x2 Screwdriver x1 Brushed gold box x1