This great sounding, easy to operate Wireless Handheld Microphone System comes with 1x Wireless Receiver (SWM260) and 1 x Handheld Wireless Microphone (SHM260). FREQUENCY BAND (655-679 MHz) True diversity design ensures rock-solid performance LCD shows all working status Up to 160 selectable frequencies Automatic frequency selection Adjustable gain level 6-segment audio meters 6-segment RF meters 3-segment transmitter battery fuel gauges Squelch adjustment Infrared data synchronization Rugged metal chassis Receivers RF Carrier Frequency Range: 500 ~ 937.5MHz Working Range: 100M Modulation: FM Pilot Tone: 32.768KHz Max Channel Number: 192 System Compatibility: 8 channels Audio Frequency Range: 50Hz ~ 15KHz(±3dB) Dynamic Range: > 105dB System Distortion: THD< 0.5% S/N Ratio: > 102dB(A) RF Sensitivity: < -95dbm for 30dB S/N ratio Image Rejection: > 60dB Output Connectors: (XLR×1) /(1/4-inch connector×1 ) Audio Output Level: (XLR:+10dBV) / (1/4-inch connector(+8dBV) Output Impedance: (XLR:3K?)/(1/4-inch connector:3K?) Display: LCD×1 Power Requirement: 12V/0.5A DC Operating Temperature Range: 0-50 ? Dimensions: 160*212*44mm Weight: 880g/1750g Handheld Transmitter Gain Adjustment Range: 0/3/6dB Input Impedance: (Mic:5K?)/(Guitar: 760K?) RF Power Output: 2mW/10mW/30mW Spurious Rejection: > 50dB Pilot Tone: 32.768KHz Display: LCD Power Requirements: 1.5V×2(AA) Battery Life: > 8hours/ 1300mAH Dimensions: 250*50mm Weight: 360g