ReceiverReceiving mode: Quartz lockedSensitivity: 8uVImage rejection: Over 75dBAudio output: 0-400mvPower requirement: DC 220V 50HzWireless microphoneMike: Moving coil dynamic(Hand-held)Electret condenser(Body-pack Transmitter/Headset micophone)Antenna: Built-inRF output: ≤10mWBattery: Two(5)1.5V AA battery or 1.2V AA rechangeable batteryOne 9V battery or 8.2V Ni-cd rechargeable batteryBattery: 8 hoursOVERALL SYSTEMCarrier frequency range: VHF220-270MHzStability: ±0.005%Max deviation: ±25KHzDynamic range: 90dBS/N ratio: >90dBT.H.D: <0.5%Squelchoise lock dual squelchFrquency response: 60Hz-15KHzOperating range: 90m(approximately 280 under typical conditions)