Takstar TS-7220HP (Black) Dual UHF Wireless Microphone with Hand and lavalier microphones. Redundant system and dual antenna ensures an interference-free reception. The transmitter has a battery charge indication (lit green when the power is normal, flashes green when the low charge) Silica frequency doubling, noise blocking technology prevent interference and impulse noise as well as improved SNR .Pitanie microphone: 2 pieces x 1.5V AA • Frequency Range : 790MHz 805MHz • Frequency Control: PLL • Channel: • a fixed reception mode: dubbed • Frequency Response: 60Hz-15kHz • Max. Frequency deviation: ± 45 kHz • S / N ratio> 80dB • THD: <0.5% • Receiver sensitivity: -90dBm • Dynamic range:> 100 dB • Audio Output: unbalanced jack Φ6.3mm + balanced XLR • Transmitting power: <10 mW • Running time: approx. 10 hours (depending on battery) • Operating range: 50 m outdoors