• With automatic mute and shock elimination circuit, to avoid the stroke and noise of the switch.
• Then conference microphone has an LED digital tube display, can directly the current display frequency.
• Wireless transmission effective distance 30-50meter conference microphone adopts lithium battery circuit design, with overcharge and over discharge protection. 
• 3 Power- supply modes: - Battery / External Illlsion power / DC Power
• Launch conference microphone has a low voltage detection and the battery character flashes when the battery voltage drops to 2.2V.
• Multiple devices can be used at the same time, without interference and frequency.
• Extremely high sensitivity and excellent sound quality make your talking or singing easy.
• A simple operation interface, very small adjustable components, can completely avoid malfunction caused by a malfunction.
• 1 Year Warranty

2.1 Transmitter Technical Specification

Frequency:667.50-696.00MHz
the channel number of 48(conservative).
Oscillation mode DSP chip frequency lock
Frequency stable±10ppm
RF efficiency 10dBm
FG40-18000Hz
Distortion≤0.5％
Battery specification 1.5V/AA Size Alkaline battery
Renewal time 4-8hours (depending on battery type and capacity.

2.2 Receiver Specifications

Frequency:667.50-696.00MHz
the channel number of 48(conservative).
Oscillation mode DSP chip frequency lock
Frequency stable±10ppm
Bonding instruction -95～-71dBm
FG40-18000Hz
Distortion≤0.5％
Signal ratio≥90dB
Audio output 300mv (maximum)