Material: ABS
Size: **2 x *5 x *0mm
Sound time: customized
Battery: AG*0 x 3pcs, battery can be replacable.
Plastic speaker: *9 x 7mm
Provide ODM & OEM service: module shape, size, plastic color,
sound etc.
This kind of module can be installed outside of the book.
There are 6 buttons, each button has one different sound.
