What's in the box:

Muslady F4800 Professional 4 Channel UHF Wireless Microphone System 4 Handheld Microphones 1 Wireless Receiver 6.35mm Audio Cable LCD Display for Stage Karaoke Party Presentation Performance Public Address (Chrome)

Muslady F4800 professional 4 channel UHF wireless handheld microphone system. High sensitivity, super clear sound, great anti-interference capability. Perfect for stages, ballrooms karaoke, family party, meeting, as wellas for giving a speech, presentation, public address.

Feature:
Professional 4 channel UHF wireless handheld microphone system.
Utilize sturdy metal material to build the microphone, with fine finished surface, comfortable to handle and durable to use.
Hight sensitivity, super clear sound, great anti-interference capability.
Effective working range up to 80 meters in open-area.
Each handheld mic is powered by 2pcs AA batteries (not included), and the receiver is supplies by power adapter (included).
Perfect for stage, ballroom Karaoke, family party, meeting, as well as for giving a speech, presentation, public address.

Specification:
Brand: Muslady
Model: F4800

-- Receiver --
Signal-to-Noise Ratio: >103dB
Working Range: 80 meters (in the open area)
Power Supply: AC Adapter (100-240V)
Plug Type: EU / US (optional)
Receiver Size: 12.4 * 6.8 * 2.5cm / 4.9 * 2.7 * 1in
Receiver Weight: 115g / 4.1oz

-- Microphone --
High Frequency Output: 30mW (max)
Power Supply (Single): 2pcs AA Batteries (not included)
Microphone Size (Single): 22.5 * 5 * 3cm / 8.9 * 2 * 1.2in
Microphone Weight (Single): 267g / 9.4oz

Package Size: 38 * 29.5 * 8.5cm / 15 * 11.6 * 3.3in
Package Weight: 1750g / 61.7oz

Packing List:
1 * Receiver
4 * Wireless Microphone
1 * Charger
1 * 6.35mm Audio Cable
2 * Antenna
1 * Manual

Note:
The batteries are not included.