Features Dual head Mic for Two way Sound PickupMetal Mic and Excellent Anti interference FunctionUniversal for Smartphone Camera and for GoproPacked with Wind Muff and Wind screen to Efficiently Filter Noise2 5mm Silica gel Cable Material Soft and PowerfulPlug and PlayPortable Case for Convenient CarryingPolar Pattern Omni directionalMaximum SPL 100dB 1kHz 1 THD into 1kΩ Frequency Range 50Hz 20kHzTHD 5 Output Impedance 600ΩDynamic Range 114dB per IEC651 Sensitivity 35dB±3dB re 1V Pa 1kHzSignal Noise 68dB SPL 1kHz rel 1Pa per IEC651 Material Cable Material Silica gelMic Shield Material Aluminum AlloyCable Length 2 5m 4 5m 6 0m Package Included 1 x Dual Head Microphone 1 x Carry Case 2 x Wind Muffs 2 x Wind Screens 2 x Lapel Clips 1 x Smartphone Converter Adaptor 1 x Converter Adaptor for Gopro