This keychain and necklace combo set is meant to be shared between a couple. A great gift to show them how much they mean to you. The world globe charm is about 5/8 of an inch across. The necklace length is 20 inches long. The charm has the globe pattern just on the front side and is flat with a slight bowled shape. The card it comes on says "You mean the world to me!" Buy 2 and share together with your loved one.