1, music chip with aa battery 2, OEM service 3, 10s-240s 4, customer music welcome ... 5. welcome order music chip with aa battery 1, Time: 6s/10s/12s/15s/20s/40s/60s , 240s2 ... button battry or dry battery,5, Other fuctions: support LED light, 6. Components: Voice IC, PCB Boad, Speaker, battery, 7, Welcome OEM and ...