... ,40mmspeaker and 3xAA batteries 4,CE&rRoSH Motion sensor sound module1,82.5mmx60mmx38mmH2,light sensor to activate music3,40mmspeaker and 3xAA batteries4,CE ... it in 0-5meters and it will play your custom pre-recorded sound.9,It is very suitable for Hotel,Supermarket,promotion,introduce ...