Feature: 6 sounds siren. Voice volume is controllable. Shouting out function,pure voice. 105 decibels,super resounding. Attached with fixed support,easy installation. Fits for various motorcycles,autos with 12V working voltage. Description: Product name: vehicle-mounted 6-tone loudspeaker Material: plastic, metal Voice coil: optimal Model no. : horn Current: 4 a Color: black Type: horn External dimensions :97*103*73mm Sensitivity: high Voltage: 12 v Frequency response: high impedance: 4 Type: propaganda Size: 97 mm Operating temperature :-20-40 Diaphragm material: excellent Sound level: 105-115 db Packing list: 1 set * horn(as shown) Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.