SAXO HIGH QUALITY BEACON SIREN HORN SK703 - Voice Coil Impedance - 4 Ohm / Voice Coil Dimension (Dia) - 25.4mm / Rated Voltage - 12V DC / Operating Voltage 9 - 16V DC Output / Output power 100W / Min S.P.L - 112db (At Rated Voltage at 1M) / Max. Rated Current 1500mA / Tone Nature - Microphone with Recorder