Features: Smart Design - Lock bracelet is Bracelet Size: approx.6x4.7cm/ 2.36 x1.85in. We recommend that you measure your wrist before buying to avoid it not fitting your wrist. Romantic matching couple jewelry symbolize that only this key will open up the heart lock bracelet. Amazing Quality - Made of high quality titanium steel, the love heart bracelet with key necklace is polishing technique, anti- rust, nickel free and hypoallergenic for safe, comfortable wear. The heart bracelet has a smooth shining surface, long-time color retention, excellent craftsmanand top quality, and it is amazingly hypoallergenic shiny rhinestone embed makes the bracelet more charming and elegant, you deserve to own It. Couple Selection - Unique design by womens heart lock bracelet with mens key necklace, the couples jewelry is romantic gifts for girlfriend and wife on valentines day, Christmas, birthday, wedding, anniversary. It is a unique and romantic way to express your everlasting love. It means you'll always be together forever. How to Open and Close - Key necklace and lock bracelet couple bracelets set is very delicate jewelry, so it takes a little skill to open and close. Align the key with the lock core of the bracelet, rotate it 90 clockwise, it is opened; align the sides of the bracelet , fasten it tightly and it will close. Specification: Material: Titanium Steel Metal Color: Gold/ Steel/ Rose Gold/ Black Bracelet Size: Approx.6x4.7cm/2.36x1.85inch Package Includes: 1 Piece Necklace 1 Piece Bracelet note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.