Model: ONIKUMA K20 Color:Black Speaker Diameter:40mm/1.57" Frequency Range:20-20KHz Sensitivity:118±3dB Impedance:32Ω±15% Microphone Diameter:6.0X5.0mm/0.24X0.2" Microphone Sensitivity:-38±3dB Microphone Impedance:2.2KΩ Directionality:Omnidirectional...