... open box recordable function is available OEM/ODM sound module for gift box,greeting card,toys play music when open boxrecordable ... Customized music and function requirements are welcome !General informaiton for sound module for gift box,greeting card,toys ,music box gift,sound ... ,WAV 8.switch option:pull-tab switch,push button,light,motion,vibration activated the sound 9.battery:2-4pcs cell battery ...