An NA Charm with a heart charm - "Serenity". It has a lobster claw clasp on the top to attach to - whatever you want! The charm measures almost 50mm from the top the clasp to the bottom of the Serenity charm. The Serenity Charm measures 15mm x 15mm, is stamped on both sides and embellished with a Swarovski crystal. The metal is lead free. It can be worn on a keychain, as a zipper pull or purse accent. Many people wear them as convention badge bling at NA Conventions. The NA logo is a trademark owned by Narcotics Anonymous.