Features:

High Frequency Response, High S/N Ratio
Package includes:
Strongly Resist Interference, Noises Output = Zero While Standing By
Super Silent Function, Low T.H.D.
Reduced Noise While Switching The Mic on & off for AMP & Speaker Protection
With a Complete Working State and Power Level Indicating
With a Wide Using Range For Over 30m
Dual Channel Designed, Best for Karaoke Singing

Best Media VHF BM-100V dual-Channel Wireless System provides you with proven performance and durability in a variety of settings, from churches to nightclubs to gymnasiums, from concert halls to broadcast booths and stadiums.

BM-100V Series VHF wireless microphone system includes one receiver and two handheld transmitters. Though it's a basic model with basic function, it gives you a gorgeous performance while singing karaoke at home or in a middle stage.

Specifications:

Overall System:

Carrier Frequency Range: 170-260MHz, VHF High Band
Frequency Stability: ± 0.005%
Modulation Mode: FM
Maxima Deviation Range: ± 15KHz
Frequency response:40 Hz - 20 KHzd
S/N ratio > 100 dB
Audio Dynamic Range > 100 dB
Frequency stability < 10 ppm
T.H.D. < 0.5%
Service Range: up to 50m (Under the best conditions)
Temperature Range: -10C to 50C

Receiver:

AC Power Supply in: 110V ( ± 10%)
S/N ratio > 100 dB
Receiving System: Fixed Frequency by Quartz Controlled
Receiving Sensitivity: 60 dB S/N ratio: 12 dBU
Audio Output Level: Unbalanced Mode of CHA+B: 0~0.5V/5KΩ ; Unbalanced Mode of CHA&CHB: 0~0.5V/50KΩ

Handheld Transmitter: