Features:

• Rockville RNGMIC add-on wireless microphone for ROCKnGO systems
  
• Add a second microphone to your RockNGo 8/10"
  
• Frequency: VHF 260.3MHz
  
• Dynamic Range: >90dB
  
• T.H.D: <0.5% @1K Hz
  
• Frequency Response: 40Hz~18kHz
  
• Operation Temperature: -10~50°
  
• Receiving Distance: >20M
  
• Battery: 1.5V x 2pcs
  
• Package size: 10.63'' x 1.97'' x 2.44” Inches