The Pierce heavy duty cattle siren is highly effective for farmers calling or relocating cattle. This heavy duty siren measures 4.5" x 4.5" x 6.33" and is rated at DC 96 W with 8-25 current amps. This siren has a run time of 10 minutes and can be heard up to 1.5 mile away. It has a 2 yr warranty and is typically used on feed trucks and for your day in day out cowboy/rancher. This unit is weather proof.