SpecificationsBrand Superlux,Model HD669,Style Over-ear,Use Other, DJ,Function Monitoring,Connectors 6.3mm, 3.5mm,Material Metal,Color Black,Dimensions (cm) 20.5*20*10.9,Weight (kg) 0.235,Speaker Diameter 50mm,Speaker Sensitivity 98db,Speaker Impendance 56ohm,Speaker Frequency Response 10-30000Hz,Cable Length 1m/3m,Max. Input Power 200mW,