[Loud Emergency Alert] Produces a powerful 120dB siren sound through hand operation, ensuring attention during situations. [Power- Operation] This hand crank siren operates manually without electricity, making it ideal for emergencies like natural disasters. [Compact and Portable] Weighs less than 2 pounds and features a compact design for easy carrying and storage in schools and workplaces. [Versatile Usage] Perfect for factories, schools, and troop deployments, effectively providing timely warnings to prevent accidents. [Durable Metal Construction] Built with sturdy metal housing, ensuring reliability and resilience in various outdoor conditions., Manufacturer: Badafaci