Wireless Karaoke Microphone Duet Pack

Product Details: Do you love singing? Then this is the perfect product for you!  No more messy cables with this super convenient wireless karaoke microphone duet pack  Jam out with a friend  Features a long wireless reception range of 50-100 meters  Great for parties, performances, or meetings when you need your voice heard  Specifications:  Frequency offset: ± 11kHz Frequency response: 80Hz-15kHz Frequency stability: ± 0.005% Signal to noise ratio: > 60dB Distortion: 0.5% (1kHz) Number of channels: two channels Sensitivity: -70dB M Operation distance: 50-100 meters (open area) Receiver power supply: DC 12V / 320mA Transmit power: 20mW Frequency range: 200MHz-270MHz Output: Automatic selection between independent and hybrid Package weight: 974g Frequency stability: ± 0.005% Carrier output power: ? 30mW Stray radiation suppression: > 40dB Modulation: VHF Maximum modulation: ± 75KHz Pickup method: Moving coil) Pre-emphasis: 50?S Power supply: 9V Battery (NOT included) Power con