Builtin publicaddress system: The car siren speaker includes an integrated PA system, allowing you to speak to people inside the vehicle using the builtin microphone. Incar communication: Use the mic to talk to passengers in your car for directions, announcements, or conversations without needing separate devices. Private announcements: Others in the car can hear you while your identity remains discreet, making it suitable for playful messages or private jokes. Seven siren sounds:Provides seven distinct alarm tones, offering a range of audible signals for attention or signaling. Loud and clear performance: Each siren tone is designed to be loud and easy to hear, ensuring your message or alert is noticeable. Function and usage: Invehicle PA and siren capabilities are integrated for convenient incar communication and signaling. Compatibility and setup: Designed for car use; no additional details on connections or mounting are provided. Size and material: Specific dimensions and materials are not specified. Practical use scenarios: 1) During road trips or daily commutes, make quick announcements to passengers, such as directing seating or sharing information. 2) Use for private, invehicle jokes or messages that others in the car cannot identify who is speaking. 3) Utilize the siren sounds to draw attention in crowded areas, parking lots, or at events for safety or coordination.