... ,speaker:dia 40mm 2,PCB size:40X30mm 3,Battery:3*AG-10 Greeting card Voice module,custom voice module,sound module ... :1,speaker:φ40mm 2,PCB size:40X30mm 3,Battery:3*AG-10Detailed Product Description:1.Material: PCB board(40X30mm), speaker(φ40mm ... ), battery(3*AG-10)2.Pre-recorded/recording time: 3 to 300 seconds ...