... gifts 1. Article Namecustomized rubber keychain with flash light or music 2. MaterialIron, ABS, speaker, pcb.3.Process ... for promotion gifts· Function: pre-recordable or recordable· Recording time: 6s,10s,20s or longer as customer need· Characteristic: ... ABS plastic, metal.Cover size: standard size or customizedCover shape: square, round, or customizedInner component: speaker, battery, PCB, ICSpeaker ...