Don't let size fool you - this small instrument makes a big sound! This real working harmonica plays in the key of C and comes with it's own keychain. Made for beginner or expert players, it really works! It has a metal cover and base plates and measures 1.5" long x .5" thick. The harmonica comes in three assorted colors: black, stainless and gold. They are sold individually, but if you have a choice in color, let us know in your order comments while checking out and we will try to accommodate! The perfect little gift for your musically inclined and a great addition to our World's Smallest collection.