Set of 2 wireless microphones with a range of up to 10 m distanceFM broadcast typeemission power 8 mw9V battery microphone supply (batteries not included)operating temperature 0-45 degrees Coperating distance 10 maudio receiver output220V receiver power supplyresponse frequency: 100Hz-10000Hz (+/- 3dB)audio distortion: <1%FM88- 108MHz frequencytype of FM receptionreception mode: super heterodynereception sensitivity: 30dB / microVaudio output level> 25mVreception sensitivity: 600W110 V / 60Hz -220 V / 50Hz