custom made sound effect innovative keychain
1. Duration time: 6/10/20/30/40/60S/
2.Can customized any sound or message you like.
3.could be pre-record or re-record.
4.,you can send us your sound files or you can record the message by yourself
5.,any colors or desigs will be ok
6.plastic materials,PCB board,button battery
7..good gifts and promotion products