Top quality with very competitive price ItemPhotoColorOEMODMMOQPackageCarton Meas.G.W./N.W.5005variousoffer30000pcspolybag/pc56*37*26CMG.W.:9.9KGSN.W.:8.8KGS 1,Speaker: φ40mm2,Frequency response: 20Hz-20,000Hz3,Impedance: 300Ω4,Sensitivity: 100dB+/-2dB5,Plug Type: φ3.5mm& φ3.5mm6,Rated Power: 40mW7,Cable length: 120cm