SHO-ME 100 WATTS ROUND BELL SPEAKER. Features: 100-watt speakers work with any siren. 6" diameter aluminum bell with black finish. Standard mounting bracket permits full-axis orientation. Nominal 375-8000 Hz, 4 ft. on axis: 128 dBA, 1 meter on axis: 130 dBA. Dimensions: 6" H x 6" W x 6 3/4" D. Weight: 8 lbs. 2 year factory warranty.