Cordless Recharging Studio Microphone UHF Wireless Microphone

D900+513 Cordless Recharging Studio Microphone UHF Wireless Microphone Karaoke Professional Bt Portable Wireless Microphone.
-Product name:D513
-Frequency range:673.5MHz-694.9MHz
-Signal-to-noise ratio:>100dB
-Frequency response:40Hz-18KHZ
-Distortion: :≤0.01%
-Working distance:50m
-Maximum frequency deviation:±48KHz
SKU: E04