Features:

Long distance high definition sound recording for live broadcast, video vlog shooting, interview recording, video teaching and other occasions
Automatic noise reduction, reverberation, monitoring, external speaker, mute and can charge your mobile phone while live broadcasting
2.4G wireless couplet, automatic connection when turned on, simple operation
Can be used on mobile phone, computers and other devices without app

Specs:
Sensitivity: -38DB
Transmission Distance: 15-20M
Frequency Responses: 20Hz-20KHz
Signal to Noise Ratio: -65db
Maximum Sound Pressure Label: 110db SPL
Sampling Frequency: 24KHz 14bit
Working Time: 2-3H

Includes: 
x2 microphones
x2 Fluffy mic covers
x1 receiver
x1 adapter
x1 USB cable