China RF Mini Handheld Wireless Microphone for Classroom Audio System

Shaving Kit Wireless Microphone:
Model: SOYO-WTG07
Features:
1). Portable handheld type, support belt-clip and neck-hanging.
2). Powered by rechargeable Li-Battery. (continually working over 7 hours)
3). Embedded Charge circuit with USB interface.
4). LCD screen shows channel, volume, power and charging status.
5). Supporting both internal and external microphone input.
6). Noise elimination circuit eliminating noise of switching on power on/off.
7). Build-in Laser pointer.
8). Build-in double high sensitivity internal microphone, satisfying on voice pickup.
9). Supporting MP3 playing music files.
10). Mute function automatically when no signal and week signal.
11). Unique PPT Page up and down function, best partner with projector, multi-media classroom screens for demonstration.
12). Strong in anti-interference, supporting over 100 classrooms using simultaneously and never crosstalk!

NO.ModelSOYO-WTG071DescriptionShaving Kit Wireless Microphone2Power(input voltage)3.7 V rechargeable lithium battery3Work currency120mA (MAX)4Operate temperature-25 ~ 85 ºC5Frequency2400 ~ 2483MHz6modulateGFSK7Channel width1 MHz8Transmit power20 dBm9Input levelMax 1.0Vpk10Input impedance10k Ohm11Input interfaceTwo kind input mode:
1. Microphone input
2. Stereo sound input12Output impedance1k Ohm13Input-output gain ratio1:114Delay2 ms15SNR95 dB16Distortion0.8 % @ 1kHz17Dynamic range90dB18Dimension116mm*35mm*18mm19Weight0.05kg