... voice chip 1,COB board size:30mmx40mm 2,time:0-270seconds 3,with double-face adhesive paper 4,pull tab switch voice chip1,COB board size ... 29mm,38mm,40mm or others.6,batteries:2xAg10 or 3xAg10 button batteries7,comply CE &RosH8,Your OEM or ODM sound module also can ... message to us with mp3 or wave file format.10,It is very suitable for your greeting card,postcard,magazine,envelope or other ,Because you ...