1, Tone: WAIL II, HI-LO, YELP, WAIL I, TOOL, QS, HORN, SIREN, HORN-1.
2, With two light switches.
3, Microphone: the microphone cannot be taken out, it is easy to use it.
4, Volume control key: it is convenient to adjust volume.
5, It is suitable to all DC 12V vehicles, we also can make DC 24V for you.