1,size:295mm*100mm*16mm(H) 2,press every picture to play sound 3,OEM or ODM design will be welcome 4.33buttons and 33pictures Books sound box 1, 295mm*100mm*16mm(H)2,press every picture to play sound3.Vocie duration : according to your provide the sound files.4,OEM or ODM design will be welcomed .5,Speaker:(27-57mm) the size can be changed as your demand 6,Power: AG10 or AG13 button cell, you can ...