NINGBO COOMA ACOUSTICS CO.,LTD Brandname Cooma 6W,with transformer 8 OHM NINGBO COOMA ACOUSTICS CO.,LTDCeiling speakerBrandname Cooma6W,with transformer 8 OHM Model No:ZT-525Rated Power:3-6WLine Voltage:70-100VSensitivity90dbFrequency Response:90-16000HzLoudspeakerĪ¦131 mmHole Dimensions/DimensionsĪ¦180X70mmWeight:0.55KG