... pre-recording sound 3,recording time:0-270sec 4,OEM or ODM sound badge 1,custom size and sound 2,press ... pre-recording sound 3,recording time:0-270sec 4,OEM or ODM design is welcomed 5,Material :ABS ,EVA ,PVC etc ... .PLastic6,Speaker :29mm7,Batteries:3xAg10 or 138,Your custom sound with mp3 or wave file format is good,So that ... .10,It is very suitable for your promotion,gift,giveaway or others.