2.4GHz Wireless Classroom Microphone for Teachers and Students

2.4GHz Digital Wireless mini microphone for education
Portable handheld type, support belt-clip neck-hanging
Rechargeable Li-Battery built-in. (continually working over 8 hours)
USB interface for charging
LCD screen shows channel, volume, power and charging status.
Supporting both internal and external microphone input.
Noise elimination circuit designing.
Build-in laser pointer.
Build-in double high sensitivity internal microphone, satisfying on voice pickup.
MP3 player built-in
Mute function automatically when no signal and weak signal
Unique PPT page up and down function, best partner with projector, multi-media classroom screens for demostration.
Strong in anti-interference, supporting over 100 classrooms using simultaneously and never crosstalk.
Description: Wireless voice amplifier
Working frequency range: 2400-2483MHz
Power supply: DC25V
S/N ratio: 95db
Distortion: 0.8%@1KHz