Muslady D4-4 Professional 4-Channel UHF Wireless Microphone System Includes 2 Headset Mics with Bodypack Transmitters + 2 Handheld Mics + 1 Rack-Mount Receiver for Business Meeting Public Speech Class

Features:
This wireless microphone system includes 2 headset mics with bodypack transmitters + 2 handheld mics + 1 rack mountable receiver, suitable for public speech, classroom teaching, business meeting, etc.
Adopts 600-690MHZ/810-865MHZ UHF frequency band to avoid interference; 4 channels and dual antenna design ensure clear and stable signal transmission.
Each microphone has its own volume control knob on the receiver unit for adjusting the volume of the microphone separately to get desired vocal volume.
The receiver has a 6.35mm audio mixing output to connect to speaker, and 4 balance XLR outputs for long distance connection to reduce the noise.
The bodypack transmitters, handheld mics and receiver both have display for showing the working information, which is helpful for you to use and adjust the microphone system.

Specifications:
--Receiver
Color: Black/ Silver(optional)
Frequency Range: UHF 600-690MHZ/810-865MHZ
Oscillation Mode: Quartz Controlled Fixed Frequency
Stability : 10PPM
Sensitivity: 2uV at  sinad=12dB
Max. Deviation Range: 50KHz
S/N Ratio: > 103dB
T.H.D.: < 0.5% at 1KHz
Image Rejection: 85dB typical
Spurious Rejection: 75dB typical
Frequency Response: 50Hz-16Khz
Power Supply: DC 12-16V 500mA Power Adapter(included)
Power Adapter: 100-240V US/ EU plug(optional)
Item Size: 48 * 22.5 * 4.5cm / 19 * 8.9 * 1.8in
Item Weight: 2350g / 5.2lbs

--Transmitter
Power: < 30mW
Spurious Emission: < 40dB
Transmitter Power Supply: 2 * AA Batteries(not included)
Transmitter Size: 11 * 6 * 2cm/ 4.3 * 2.4 * 0.8in
Transmitter Weight: 72g / 2.5oz
Handheld Microphone Power Supply: 2 * AA Batteries(not included)
Handheld Microphone Size: 25.5 * 4cm / 10 * 1.6in
Handheld Microphone Weight: 350g / 12.3oz

Package Size: 53 * 28 * 13.5cm / 20.9 * 11 * 5.3in
Package Weight: 4205g / 9.3lbs

Note:
You will need an extra speaker or amplifier to connecting with the receiver to make the sound working.
The batteries for transmitters and microphones are not included.

Package List:
1 * Receiver
2 * Headset Microphones
2 * Transmitters
2 * Handheld Microphones
2 * Antennas
2 * Mini Wrenches
1 * Audio Cable
1 * Power Adapter
1 * User Manual(English)