Professional Wireless Microphone System Dual Channel Handheld Karaoke Microphone Recording Studio Party Stage Performance Comprehensive parameters: Modulation method: FM Oscillation mode: VCO+PLL Offset: ±45KHz Signal-to-noise ratio S/N: >85dB Distortion: < 0.5% Receiving distance: 60 meters in ideal environment Receiver parameters Antenna Access: BNC/50Ω Sensitivity: 15dBuV Harmonic interference ratio: >80dB Artifact interference ratio: >70dB Power consumption: ≤2W Audio output: Φ6.35 socket mixed unbalanced output Power specification: DC 12V/500mA Transmitter parameters: Transmit power: high power 10mW Maximum input sound pressure: 100dB Microphone capsule: dynamic (optional) Audio frequency response: 60Hz~15KHz±3dB Battery Specifications: AA1.5V×2 Battery Life: Greater than 6 hours when transmitting at normal power Number of channels: 2 Transmitter Shape: Handheld