ITEM NAME:4x 3'' Metal Car Truck 1950's Electric Motor Driven Air Raid Siren Description: A true high quality and a brand new Heavy Duty, All Metal Air Raid Siren/Horn 1950s Style. 3 inch Diameter and features a rugged construction, easy mounting, & detailed instructions. Applications Vehicle: Fits on Any 12 Volt Vehicle, such as Car, Truck, SUV, Motorcycle, Yacht, Boat,Vehicle, Bus,etc. Easy to Install. All metal body, durable for use. Specification: Heavy Duty Construction Motor Driven For an Authentic Sound Durable Powder Coated Finish Sound Level: 110dB Color: Red Size: approx.80mmx72mmx75mm Package Includes: 4 Pieces Air Raid Siren Horn Note: Pls allow slight size error and color difference due to manual measurement and different monitors. Thanks. Enjoy the shopping and have a nice day. ☠º SKU: DMO0015302919328411.4 Pieces Air Raid Siren Horn. Applications Vehicle: Fits on Any 12 Volt Vehicle, such as Car, Truck, SUV, Motorcycle, Yacht, Boat,Vehicle, Bus,etc. Motor Driven For an Authentic Sound. Durable Powder Coated Finish.