... flash light or music 2. MaterialIron, ABS, speaker, pcb.3.Process / TechniqueStamping4.ColoringFilled with Soft enamel match ... 10. Payment termsLC, TT, Western Union, Paypal, MoneyGram Custom sound keychain used for promotion gifts· Applied for: sound ... shape: square, round, or customizedInner component: speaker, battery, PCB, ICSpeaker size: 27mm metal availableBattery size: AG13Battery life: 500 ...