Features:
Professional VHF wireless handheld microphone system.
4 different frequencies(740.2MHz, 759.1MHz, 745.1MHz, 758.2MHz).
High sensitivity, super clear sound, great anti-interference capability.
Effective working range up to 30m / 100ft in open-area.
Standard XLR balanced and 1/4" mixed output interface.
With volume adjusting knobs for 4 channels separately.
The mic run on 2 * AA batteries(not included), and the receiver powered by power adapter(110-240V).
Comes with a 1/4" audio cable.
Perfect for stages, ballrooms Karaoke, families party, meeting, as well as for giving a speech, presentation, public address.

Specifications:
--System
Frequency Range: 180-270MHz
Modulation System: FM
4 Different Frequencies: 740.2MHz, 759.1MHz, 745.1MHz, 758.2MHz
Frequency Response: 40Hz-20KHz
Signal-to-noise: =100dB
Dynamic Range: =0.5%
Working Range: 30m / 100ft

--Receiver:
Sensitivity: 60dB
S/N: > 100dB
Power Supply: AC Adapter(110-240V)
Plug: US
Receiver Size: 42 * 18 * 4.5cm / 16.5 * 7.1 * 1.8in
Receiver Weight: 1515g / 53.5oz

--Microphone:
High Frequency Output: 30mW(Max.)
Power Supply(Single): 2 * AA Batteries(not included)
Microphone Size(Single): 25 * 5 * 5cm / 9.8 * 2 * 2in
Microphone Weight(Single): 320g / 11oz

Package List:
1 * Receiver
4 * Wireless Microphone
1 * Charger
1 * Cable
4 * Anti-Slip Sleeve
4 * Antenna
2 * Mic Shelf
1 * Manual

Note:
The batteries are not included.