A special keychain like your voice!!! Sign in your message with sound wave on the back(e.g. 'I Love You,' 'I Do'...) on your phone or computer and send it to us. You may also record the message on your back(opted). You can also get the waveform of the heartbeat, favorite song or movie of your baby! We will gravure your voice 's unique waveform on a sterling silver plate. Please pick whether you want to be gravured on one side or on both sides. Choose your desired metalCustomize your keychainAfter placing your order, you can ship to us the file with the recording at mykosmagr!]. [[Custome online!] Customize the file and the recording at mykosmagr!] [You must choose a slip chart with the following keychain options: options: options: options! Your gemstone will arrive at] gmail.com in a nice gift box packed for donations.