Tell someone special how much you love them with this elegant photo-projecting keychain. Simply hold the pendant up to a light source, and it will project the photo. Custom the code keychain, and choose any song you want, all can be imprinted on the plaque, and you can generate a unique code. Please note that the plaque itself does not emit music. You have to scan the code on the app, after scanning the code, your song will start playing immediately. On any memorable day, I believe this is the most romantic gift, play the most beautiful music for your love.