The ZH-5050M-AS is a horn speaker highly intelligible with built-in low frequency cut filler, general-purpose speaker suited to public address announcement applications. It's external speaker component finished with coating, and stainless steel screws ensure the unit is rust resistance and weatherproof capability. Specifications : Rated Input 50 W Rated Impedance 100V line: 200Ω (50W) High Impedance Sound Pressure Level (100W/1m) : 110 dB (1W, 1m) Dust/Water Protection : IP65 Frequency Response 160 Hz - 6kHz Dimension (∅ x D :) Ø500 (W) x 463 (D)mm Weight : 5kg