... Voice module,Pre-recorded module, Parameter: 1,speaker:dia 40mm 2,PCB size:40X30mm 3 ... PCB board, speaker, battery, press button, and recording IC Voice or music pre-recorded time: 3 to ... 300 seconds for recording function, may according to the customers actual request ... pre-recorded time: 3 to 300 seconds for recording function, may according to the customers actual request ...