... RoHS SGS Welcome OEM Details:Used for : Greeting card, Invitation card, Wedding card, Newspaper, Magazine, Gift box.etc Customized are ... seconds to 270 seconds, even more if required Components: PCB, IC, speaker, microphone, LED indicator, batteries, wire harness, switch ... 13.5kgShenzhen ESYS Electronics Co., Ltd. was established in 2011 in Shenzhen, mainland China. We are a manufacturer of ...