... button 1,size:45mm Dia x25mm H 2,recordable time:6sec,10sec,20sec 3,record any sound 4,OEM or ODM voice ... sound4,OEM or ODM 5,speaker:29mm6:batteries:3xAg13 button batteries7,Comply CE and RoSH 8,The chip ... clear sound quality.9,When you start to record any message or music ,You need push "REC/PLAY" switch ... you press the top to listen to have been message or sound recorded just now.Meantime you also can ...