Model Number: SA-714 Brand Name: SADES Key Specifications/Special Features: Features:Overall design in line with somatology, adaptable headband to bring you comfortable wearingSoft leather ear-pad, looks elegant and generousHigh-sensitivity microphone up to clear, cute and durableHigh-quality cord in single-line design, to improve ease of useSpecifications:Loudhailer diameter: 40mmFrequency range: 20 to 20,000HzSensitivity: 117 ±3dB at 1kHzImpedance: 32Ω ± 15%Maximum input power: 30mWMicrophone dimensions: 6.0 x 5.0mmSensitivity: -54 ±3dBCable length: 2.0mWelcome to inquiry form us!Skype: susie.zeng1Email: [email protected]