... 3,with double-face adhesive paper 4,pull tab switch pre-recording module1,COB board size:30mmx40mm2 ... ,time:0-270seconds3,with double-face adhesive paper back4, ... design chart.9,Pls send your customizable recording sounds and message to us with mp3 ... wave file format.10,It is very suitable for your greeting card,postcard,magazine,envelope or other ...