secret message keychain,custom message,graduation gift,locket keychain. keyring size: 27mm(about 1") Locket: 27mm(about 1") brass based locket Comes in gift box,ready for gifting *How to add secret message? If you would like to add secret message,simply Write your message in the product options. Please make sure your message is written exactly how you would like it to appear. Message should be less than 80 characters including space.