Good audio quality Customized design are accepted OEM / ODM are welcome. CE ROHS ISO9001:2008 ... , Promotional gifts, etc.l Activated: by push, pull-tab (slide), light, voice, vibration, PIR, etcl Components: PCB, IC, speaker, microphone, LED ... harness, switch, more or less for different itemsl Any customize design and music file are welcome.l OEM/ODM service is ...