The Storm Pro Siren by Feniex is a 100 Watt multi function siren with 7 different sounds. The Storm aplifier is only 7 inches long and 4 inches wide making it a perfect application for undercover vehicle. The Storm Pro boasts 124 decibels of thundering sound and a slim, low profile, the perfect combination for emergency vehicle siren users who want a big boom, but don't have much room. Super compact and rugged, the Storm Pro 100-Watt siren can be mounted in the tightest locations, making it the leading siren in the emergency warning industry. For maximum impact, pair your Storm Pro police sirens with the Feniex Triton speaker.