Five Oceans Marine Electric Dual Trumpet Horn Stainless Steel 125 dB, 12V FO-2151 MADE WITH 100 PERCENT non-magnetic PREMIUM-QUALITY AISI 316 stainless steel. AMPERAGE of 4.5 amps with. VOLTAGE of 12 Volts. THE SOUND output of 125dB This electric horm DOES NOT REQUIRE a compressor, it features a simple and easy two wires (+/-) connection Dual Trumpet system ideal for marine applications, boats, Rv and trucks THE Frequency is 370 +/- 20Hz; 310 +/- 20Hz with a Maximum amp draw of 10 amps. DB(A) rating is 123 at one meter