... with flash light or music 2. MaterialIron, ABS, speaker, pcb.3.Process / TechniqueStamping4.ColoringFilled with Soft ... standard size or customizedCover shape: square, round, or customizedInner component: speaker, battery, PCB, ICSpeaker size: 27mm metal availableBattery size ... are ranged from electronics toys, promotion gifts, electronics component. For example sound chip, sound box, music greeting ...