Datavideo Hp-2A Two Ear Headphone With Mic.

Two ear headset Circumaural / Closed cans to avoid sound leakage - in and out Ear pads are soft and comfortable for extended use Noise cancelling microphone Connection: x1 1/8"" Audio/Microphone Connector Headphone Specifications Transducer Principle: Dynamic Operating Principle: Closed Transmission Range: 10Hz-22KHz Nominal Impedance: 24 Ohms Nominal SPL at 1KHz: 98dB T.H.D.: <0.2% (at 1KHz 100mW) Nominal Power Rating: 100mW Microphone Specifications Transducer Principle: Condenser Transmission Range: 20-16KHz Polar Pattern: Omni-Directional Nomal Impedance: 2.2 Kohms Sensitivity: -64dB