What's in the box:

ammoon 4S Professional 4 Channel UHF Wireless Lavalier Lapel Collar Clip-on Microphone System 4 Mics 1 Wireless Receiver 6.35mm Audio Cable LCD Display for Karaoke Family Party Presentation Performance Public Address

ammoon professional 4 channel UHF 610-680MHz wireless lavalier clip-on microphone. High sensitivity, super clear sound, great anti-interference capability. Perfect for stages, meeting, giving a speech, presentation and public address.

Features:
Professional 4 channel UHF 610-680MHz wireless microphone system.
High sensitivity, super clear sound, great anti-interference capability.
Effective working range up to 80 meters in open-area.
With standard XLR balanced and 1/4" mixed output interface.
Independent volume adjusting knobs for 4 channels, AF/RF indicator light.
One bodypack run on 2 * AA batteries(not included), and supplied with a power adapter for the receiver, 1/4" audio cable.
Ideal for classroom, meeting, mall exhibitions, coaches, giving a speech, presentation and public address, outdoor activities etc.

Specifications:
Brand: ammoon
Model: 4S

--Receiver:
Frequency Range: UHF 610-680MHz
Frequency Response: 60Hz-16KHz
Signal-to-noise Ratio: > 103dB
Working Range: 80meters(in the open area)
Power Supply: AC Adapter(100-240V)
Plug: US
Receiver Size: 42 * 21 * 4.5cm / 16.5 * 8.3 * 1.8in
Receiver Weight: 1748g / 61.6oz

--Microphone:
High Frequency Output: 30mW(Max.)
Power Supply(Single): 2 * AA Batteries(not included)
Bodypack Size(Single): 11 * 6.5 * 2cm / 4.3 * 2.6 * 0.8in
Lavalier Mic Length: Approx. 1m / 40in

Package List:
1 * Receiver
4 * Bodypack(with lavalier mic)
1 * Charger
1 * 6.35mm Audio Cable
2 * Antenna
1 * Manual

Note:
The batteries are not included.