Microphone handheldAntenna Program: Built-inTransmission power: 10MWSpurious suppression: -60dBPower supply: Two AA batteries(1.5V)Core Direction: Heart-shapedPickup: DynamicMicrophone size: 25cmMicrophone working flow: 100mAUse distance:20-40 meters (understandard conditions)Operating temperature range: -30C-+60CFrequency stability: within 0.005%Maximum frequency deviation: 45KHzBattery application time: 2-8 hours (standarduniversal battery)Operating frequency range: UHF600-699MHzMicrophone handheld/Fanny pack collar clip :(optional)Operating frequency range: UHF500-599mhzAntenna program: built - inTransmission power: 10MWStray suppression: -60dbMi core directivity: heart type directionPickup: moving coilMicrophone size: 25CMPower supply: built-in batteryMicrophone operating current: 100mAUse distance: 2-60m (under standard conditions)Operating temperature range: - 30 C - + 60 CFrequency stability: within + / - 0.005%Maximum frequency deviation: + / - 45KHzBattery life: 8 hoursCharging time: 3-4 hoursCharging mode: USB charging 5V